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Siles Alvarado N, Schuler M, Maguire C, Amengor DA, Nguyen AW, Wilen RE, Rogers J, Bazzi S, Caslin B, DiPasquale C, Abigania M, Olson E, Creaturo J, Hurley K, Triplett TA, Rousseau JF, Strakowski SM, Wylie D, Maynard JA, Ehrlich LIR, Melamed E. SARS-CoV-2 humoral immune responses in convalescent individuals over 12 months reveal severity-dependent antibody dynamics. COMMUNICATIONS MEDICINE 2025; 5:149. [PMID: 40316665 PMCID: PMC12048490 DOI: 10.1038/s43856-025-00828-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 03/28/2025] [Indexed: 05/04/2025] Open
Abstract
BACKGROUND Defining the kinetics of SARS-CoV-2 antibody responses is critical for informing the management of reinfections, vaccinations, and therapeutics of Coronavirus disease 2019 (COVID-19). METHODS Using four antibody assays, we evaluated antibody titers against SARS-CoV-2 nucleocapsid (N), spike (S), and receptor binding domain (RBD) in 98 convalescent participants with varying COVID-19 disease severities (asymptomatic, mild, moderate or severe) at 1, 3, 6, and 12-months post-SARS-CoV-2-positive PCR and in 17 non-vaccinated, non-infected controls. RESULTS Increasing acute COVID-19 disease severity correlates with higher anti-N and anti-RBD titers throughout 12 months post-infection. Anti-N and anti-RBD titers decline over time in all participants, except for increased anti-RBD titers post-vaccination, with hospitalized participants exhibiting faster decay rates. Less than 50% of participants retain anti-N titers above controls at 12 months, with non-hospitalized participants falling below controls sooner. Nearly all participants maintain anti-RBD titers above controls for 12 months, suggesting long-term protection against severe reinfections. Nonetheless, by 6 months, few participants retain >50% of their initial 1-month anti-N or anti-RBD titers. Notably, vaccine-induced anti-RBD titers are higher in non-hospitalized participants. Lastly, early convalescent titers correlate with age but not with Post-Acute Sequelae of SARS-CoV-2 infection (PASC) status or steroid use. CONCLUSION Hospitalized participants initially develop higher anti-SARS-CoV-2 antibody titers that decline faster relative to non-hospitalized participants. While anti-N titers fall below control levels in some participants, anti-RBD titers remain above controls over 12 months, demonstrating long-lived antibody responses known to protect against severe disease. These findings advance our understanding of COVID-19 antibody dynamics.
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Affiliation(s)
- Nadia Siles Alvarado
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | - Maisey Schuler
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | - Cole Maguire
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | - Dzifa A Amengor
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, USA
| | - Annalee W Nguyen
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Rebecca E Wilen
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Jacob Rogers
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | - Sam Bazzi
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | - Blaine Caslin
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | | | | | | | - Janelle Creaturo
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | - Kerin Hurley
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
- Dell Seton Medical Center at The University of Texas, Austin, TX, USA
| | - Todd A Triplett
- Department of Oncology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
- Department of Immunotherapeutics & Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, USA
| | - Justin F Rousseau
- Department of Population Health, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
- Biostatistics and Clinical Informatics Section, Department of Neurology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Stephen M Strakowski
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Psychiatry, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | - Dennis Wylie
- Center for Biomedical Research Support, The University of Texas at Austin, Austin, TX, USA
| | - Jennifer A Maynard
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Lauren I R Ehrlich
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, USA.
- Department of Oncology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA.
| | - Esther Melamed
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA.
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2
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Liu X, Xin Y, Zhang L, Wu Y, Jing S, Dai Z, Ren T, Liu X, Fu J, Chen X, Xiao W, Wang H, Huang Y, Wang W, Gu X, Ma L, Zhang S, Yu Y, Li L, Gao T, Zhao T, Qu Y, Liu X, Su X, Qiao Y. Uptake and hesitancy of the second booster dose of COVID-19 vaccine among the general population in China after the surge period of the COVID-19 pandemic: a large-scale national study. BMC Public Health 2025; 25:503. [PMID: 39920639 PMCID: PMC11803999 DOI: 10.1186/s12889-025-21691-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Accepted: 01/30/2025] [Indexed: 02/09/2025] Open
Abstract
BACKGROUND Although the second booster dose of COVID-19 vaccines is available, vaccine hesitancy among the public may have peaked due to the surge in infections caused by the Omicron variant. To improve coverage of the second booster dose, it is crucial to investigate the prevalence of vaccine hesitancy among the general population during this period and explore the reasons for this phenomenon. METHODS A cross-sectional survey was conducted between January 5 to February 9, 2023. Variables including sociodemographics, mental health, COVID-19 infection status, COVID-19 vaccination status, and vaccine hesitancy were collected. Univariate and multivariate logistic regression analysis were performed to identify factors associated with the hesitancy of the second booster dose of COVID-19 vaccine among the general population. RESULTS Among the 10,623 participants, the uptake rate of the second booster dose was 4.3%. Among those who did not receive the second booster dose, 43.6% expressed vaccine hesitancy. The highest hesitancy rate was observed among participants who had not completed primary immunization (71.4%), followed by those with chronic diseases (48.6%) and those aged 60 and above (33.2%). The COVID-19 vaccine hesitancy was higher among females, participants with high incomes, those with a history of COVID-19 infection, those with depressive symptoms and post-traumatic stress disorder, and those with adverse events after COVID-19 vaccination. Conversely, lower hesitancy was observed among students, participants aged 60 and above, those from southern China, and those with higher level of perceived social support. CONCLUSIONS COVID-19 vaccine hesitancy remains prevalent among the general population in China after the surge period of the pandemic. Crucial steps, such as raising public awareness of the benefits and potential side effects of regular COVID-19 vaccination, ensuring timely monitoring and disclosure of pandemic information, and implementing targeted measures to improve social support and mental health, should be taken. These efforts will be instrumental in reducing vaccine hesitancy, advancing vaccination campaigns, and effectively preparing for the potential future outbreaks.
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Affiliation(s)
- Xin Liu
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - You Xin
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ling Zhang
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yijin Wu
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shu Jing
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zhenwei Dai
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China
| | - Tianrui Ren
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaoyang Liu
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jiaqi Fu
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xu Chen
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Weijun Xiao
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Hao Wang
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yiman Huang
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Wenjun Wang
- School of Nursing, Jining Medical University, Jining, China
| | - Xiaofen Gu
- Affiliated Tumor Hospital, Xinjiang Medical University, Urumqi, China
| | - Li Ma
- Public Health School, Dalian Medical University, Dalian, China
| | - Shaokai Zhang
- Henan Cancer Hospital, Affiliate Cancer Hospital of Zhengzhou University, Zhengzhou, China
| | - Yanqin Yu
- The First Affiliated Hospital of Baotou Medical College, Baotou, China
| | - Li Li
- Department of Clinical Research, the First Affiliated Hospital of Jinan University, Guangzhou, China
| | | | | | - Yimin Qu
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xinyan Liu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
| | - Xiaoyou Su
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
| | - Youlin Qiao
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Department of Epidemiology, Cancer Hospital, National Cancer Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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Moradi G, Piroozi B, Khayyati F, Moradpour F, Safari H, Mohamadi Bolbanabad A, Fattahi H, Younesi F, Ebrazeh A, Shokri A. The effect of COVID-19 on utilization of chronic diseases services. Chronic Illn 2024; 20:309-319. [PMID: 37488977 PMCID: PMC10372501 DOI: 10.1177/17423953231178168] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 05/08/2023] [Indexed: 07/26/2023]
Abstract
OBJECTIVES The aim of the present study is to evaluate the impact of Covid-19 on utilization of chronic diseases services. METHODS Interrupted time-series design was used to examine the utilization of chronic diseases services before and during the Covid-19 pandemic among hospitals in Iran. Chronic obstructive pulmonary disease (COPD), asthma, type 2 diabetes, heart failure, and chemotherapy were selected as a proxy to indicate the impact of Covid-19 on utilization of chronic diseases services. Data were collected in 24 sites from 12 months before the onset of Covid-19 (from March 2019 to February 2020) to 12 months during the Covid-19 pandemic (February 2020 to March 2021). RESULTS A total of 7,039,378 services were provided, of which 51.92% were provided for women and 62.73% for >65 age group. A sudden decrease was observed in monthly utilization of services during the Covid-19 pandemic; ranging from 13.91 (95% CI = -21.73, 6.10, P = 0.001) for chemotherapy to 606.39 (95% CI = -1040.72, 172.06, P = 0.009) for heart failure services per 100 thousand population. A decrease was observed in COPD services; 15.28 services compared with the period before Covid-19. Subsequently, the monthly utilization trends of asthma, type 2 diabetes, and chemotherapy services increased significantly (P < 0.05). DISCUSSION Although chronic diseases are a factor in more severe form of Covid-19, their failure to seek diagnostic, prevention and treatment services has somewhat complicated the issue.
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Affiliation(s)
- Ghobad Moradi
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Bakhtiar Piroozi
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Fariba Khayyati
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Farhad Moradpour
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hossein Safari
- Health Promotion Research Center, Iran University of Medical Science, Tehran, Iran
| | - Amjad Mohamadi Bolbanabad
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hamed Fattahi
- Centre for Primary Health Care Network Management, Ministry of Health and Medical Education, Tehran Iran
| | - Fatemeh Younesi
- Center for Health Human Resources Research & Studies, Ministry of Health and Medical Education, Tehran, Iran
| | - Ali Ebrazeh
- Department of Public Health, School of Public Health, Qom University of Medical Sciences, Qom, Iran
| | - Azad Shokri
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Stern D, Meyer TC, Treindl F, Mages HW, Krüger M, Skiba M, Krüger JP, Zobel CM, Schreiner M, Grossegesse M, Rinner T, Peine C, Stoliaroff-Pépin A, Harder T, Hofmann N, Michel J, Nitsche A, Stahlberg S, Kneuer A, Sandoni A, Kubisch U, Schlaud M, Mankertz A, Schwarz T, Corman VM, Müller MA, Drosten C, de la Rosa K, Schaade L, Dorner MB, Dorner BG. A bead-based multiplex assay covering all coronaviruses pathogenic for humans for sensitive and specific surveillance of SARS-CoV-2 humoral immunity. Sci Rep 2023; 13:21846. [PMID: 38071261 PMCID: PMC10710470 DOI: 10.1038/s41598-023-48581-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
Serological assays measuring antibodies against SARS-CoV-2 are key to describe the epidemiology, pathobiology or induction of immunity after infection or vaccination. Of those, multiplex assays targeting multiple antigens are especially helpful as closely related coronaviruses or other antigens can be analysed simultaneously from small sample volumes, hereby shedding light on patterns in the immune response that would otherwise remain undetected. We established a bead-based 17-plex assay detecting antibodies targeting antigens from all coronaviruses pathogenic for humans: SARS-CoV-2, SARS-CoV, MERS-CoV, HCoV strains 229E, OC43, HKU1, and NL63. The assay was validated against five commercial serological immunoassays, a commercial surrogate virus neutralisation test, and a virus neutralisation assay, all targeting SARS-CoV-2. It was found to be highly versatile as shown by antibody detection from both serum and dried blot spots and as shown in three case studies. First, we followed seroconversion for all four endemic HCoV strains and SARS-CoV-2 in an outbreak study in day-care centres for children. Second, we were able to link a more severe clinical course to a stronger IgG response with this 17-plex-assay, which was IgG1 and IgG3 dominated. Finally, our assay was able to discriminate recent from previous SARS-CoV-2 infections by calculating the IgG/IgM ratio on the N antigen targeting antibodies. In conclusion, due to the comprehensive method comparison, thorough validation, and the proven versatility, our multiplex assay is a valuable tool for studies on coronavirus serology.
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Affiliation(s)
- Daniel Stern
- Biological Toxins (ZBS 3), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany.
| | - Tanja C Meyer
- Biological Toxins (ZBS 3), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Fridolin Treindl
- Biological Toxins (ZBS 3), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Hans Werner Mages
- Biological Toxins (ZBS 3), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Maren Krüger
- Biological Toxins (ZBS 3), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Martin Skiba
- Biological Toxins (ZBS 3), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Jan Philipp Krüger
- Department of Microbiology and Hospital Hygiene, Bundeswehr Hospital Berlin, Berlin, Germany
| | - Christian M Zobel
- Department of Internal Medicine, Bundeswehr Hospital Berlin, Berlin, Germany
| | | | - Marica Grossegesse
- Highly Pathogenic Viruses (ZBS 1), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Thomas Rinner
- Highly Pathogenic Viruses (ZBS 1), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Caroline Peine
- Immunization Unit (FG 33), Department for Infectious Disease Epidemiology, Robert Koch Institute, 13353, Berlin, Germany
| | - Anna Stoliaroff-Pépin
- Immunization Unit (FG 33), Department for Infectious Disease Epidemiology, Robert Koch Institute, 13353, Berlin, Germany
| | - Thomas Harder
- Immunization Unit (FG 33), Department for Infectious Disease Epidemiology, Robert Koch Institute, 13353, Berlin, Germany
| | - Natalie Hofmann
- Highly Pathogenic Viruses (ZBS 1), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Janine Michel
- Highly Pathogenic Viruses (ZBS 1), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Andreas Nitsche
- Highly Pathogenic Viruses (ZBS 1), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Silke Stahlberg
- Central Epidemiological Laboratory (FG 22), Department of Epidemiology and Health Monitoring, Robert Koch Institute, 12101, Berlin, Germany
| | - Antje Kneuer
- Central Epidemiological Laboratory (FG 22), Department of Epidemiology and Health Monitoring, Robert Koch Institute, 12101, Berlin, Germany
| | - Anna Sandoni
- Central Epidemiological Laboratory (FG 22), Department of Epidemiology and Health Monitoring, Robert Koch Institute, 12101, Berlin, Germany
| | - Ulrike Kubisch
- Central Epidemiological Laboratory (FG 22), Department of Epidemiology and Health Monitoring, Robert Koch Institute, 12101, Berlin, Germany
| | - Martin Schlaud
- Central Epidemiological Laboratory (FG 22), Department of Epidemiology and Health Monitoring, Robert Koch Institute, 12101, Berlin, Germany
| | - Annette Mankertz
- Measles, Mumps, Rubella, and Viruses Affecting Immunocompromised Patients (FG 12), Robert Koch Institute, 13353, Berlin, Germany
| | - Tatjana Schwarz
- Institute of Virology, Charité-Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - Victor M Corman
- Institute of Virology, Charité-Universitätsmedizin Berlin, 10117, Berlin, Germany
- Corporate Member, Freie Universität Berlin, 10117, Berlin, Germany
- Corporate Member, Humboldt-Universität zu Berlin, 14195, Berlin, Germany
| | - Marcel A Müller
- Institute of Virology, Charité-Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - Christian Drosten
- Institute of Virology, Charité-Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - Kathrin de la Rosa
- Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association (MDC), 13125, Berlin, Germany
- Berlin Institute of Health (BIH), Charité-Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - Lars Schaade
- Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Martin B Dorner
- Biological Toxins (ZBS 3), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany
| | - Brigitte G Dorner
- Biological Toxins (ZBS 3), Centre for Biological Threats and Special Pathogens, Robert Koch Institute, 13353, Berlin, Germany.
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Siles N, Schuler M, Maguire C, Amengor D, Nguyen A, Wilen R, Rogers J, Bazzi S, Caslin B, DiPasquale C, Abigania M, Olson E, Creaturo J, Hurley K, Triplett TA, Rousseau JF, Strakowski SM, Wylie D, Maynard J, Ehrlich LIR, Melamed E. SARS-CoV-2 Humoral Immune Responses in Convalescent Individuals Over 12 Months Reveal Severity-Dependent Antibody Dynamics. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.12.05.23299462. [PMID: 38106077 PMCID: PMC10723498 DOI: 10.1101/2023.12.05.23299462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Background Understanding the kinetics and longevity of antibody responses to SARS-CoV-2 is critical to informing strategies toward reducing Coronavirus disease 2019 (COVID-19) reinfections, and improving vaccination and therapy approaches. Methods We evaluated antibody titers against SARS-CoV-2 nucleocapsid (N), spike (S), and receptor binding domain (RBD) of spike in 98 convalescent participants who experienced asymptomatic, mild, moderate or severe COVID-19 disease and in 17 non-vaccinated, non-infected controls, using four different antibody assays. Participants were sampled longitudinally at 1, 3, 6, and 12 months post-SARS-CoV-2 positive PCR test. Findings Increasing acute COVID-19 disease severity correlated with higher anti-N and anti-RBD antibody titers throughout 12 months post-infection. Anti-N and anti-RBD titers declined over time in all participants, with the exception of increased anti-RBD titers post-vaccination, and the decay rates were faster in hospitalized compared to non-hospitalized participants. <50% of participants retained anti-N titers above control levels at 12 months, with non-hospitalized participants falling below control levels sooner. Nearly all hospitalized and non-hospitalized participants maintained anti-RBD titers above controls for up to 12 months, suggesting longevity of protection against severe reinfections. Nonetheless, by 6 months, few participants retained >50% of their 1-month anti-N or anti-RBD titers. Vaccine-induced increases in anti-RBD titers were greater in non-hospitalized relative to hospitalized participants. Early convalescent antibody titers correlated with age, but no association was observed between Post-Acute Sequelae of SARS-CoV-2 infection (PASC) status or acute steroid treatment and convalescent antibody titers. Interpretation Hospitalized participants developed higher anti-SARS-CoV-2 antibody titers relative to non-hospitalized participants, a difference that persisted throughout 12 months, despite the faster decline in titers in hospitalized participants. In both groups, while anti-N titers fell below control levels for at least half of the participants, anti-RBD titers remained above control levels for almost all participants over 12 months, demonstrating generation of long-lived antibody responses known to correlate with protection from severe disease across COVID-19 severities. Overall, our findings contribute to the evolving understanding of COVID-19 antibody dynamics. Funding Austin Public Health, NIAAA, Babson Diagnostics, Dell Medical School Startup.
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Affiliation(s)
- Nadia Siles
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Maisey Schuler
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Cole Maguire
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Dzifa Amengor
- Department of Molecular Biosciences, University of Texas at Austin, Austin, Texas
| | - Annalee Nguyen
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas
| | - Rebecca Wilen
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas
| | - Jacob Rogers
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Sam Bazzi
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Blaine Caslin
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas
| | | | | | | | - Janelle Creaturo
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Kerin Hurley
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas; Dell Seton Medical Center at the University of Texas, Austin, Texas
| | - Todd A Triplett
- Department of Oncology Dell Medical School, University of Texas at Austin, Austin, Texas; Department of Immunotherapeutics & Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, USA
| | - Justin F Rousseau
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas; Department of Population Health, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Stephen M Strakowski
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis; Department of Psychiatry, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Dennis Wylie
- Center for Biomedical Research Support, University of Texas at Austin, Austin Texas
| | - Jennifer Maynard
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas
| | - Lauren I R Ehrlich
- Department of Molecular Biosciences, University of Texas at Austin, Austin, Texas
| | - Esther Melamed
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, Texas
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6
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El Abdellati K, Lucas A, Perron H, Tamouza R, Nkam I, Richard JR, Fried S, Barau C, Djonouma N, Pinot A, Fourati S, Rodriguez C, Coppens V, Meyer U, Morrens M, De Picker L, Leboyer M. High unrecognized SARS-CoV-2 exposure of newly admitted and hospitalized psychiatric patients. Brain Behav Immun 2023; 114:500-510. [PMID: 37741299 DOI: 10.1016/j.bbi.2023.09.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 08/28/2023] [Accepted: 09/16/2023] [Indexed: 09/25/2023] Open
Abstract
BACKGROUND Patients with pre-existing mental disorders are at higher risk for SARS-CoV-2 infection and adverse outcomes, and severe mental illness, including mood and psychosis spectrum disorders, is associated with increased mortality risk. Despite their increased risk profile, patients with severe mental illness have been understudied during the pandemic, with limited estimates of exposure in inpatient settings. OBJECTIVE The aim of this study was to describe the SARS-CoV-2 seroprevalence and antibody titers, and pro-inflammatory cytokine concentrations of newly admitted or hospitalized psychiatric inpatients without known history of COVID-19 infection, using robust quantitative multi-antigen assessments, and compare patients' exposure to that of hospital staff. METHODS This multi-centric, cross-sectional study compared SARS-CoV-2 seroprevalence and titers of 285 patients (University Psychiatric Centre Duffel [UPCD] N = 194; Assistance-Publique-Hopitaux de Paris [AP-HP] N = 91), and 192 hospital caregivers (UPCD N = 130; AP-HP N = 62) at two large psychiatric care facilities between January 1st and the May 30th 2021. Serum levels of SARS-CoV-2 antibodies against Spike proteins (full length), spike subunit 1 (S1), spike subunit 2 (S2), spike subunit 1 receptor binding domain (S1-RBD) and Nucleocapsid proteins were quantitatively determined using an advanced capillary Western Blot technique. To assess the robustness of the between-group seroprevalence differences, we performed sensitivity analyses with stringent cut-offs for seropositivity. We also assessed peripheral concentrations of IL-6, IL-8 and TNF-a using ELLA assays. Secondary analyses included comparisons of SARS-CoV-2 seroprevalence and titers between patient diagnostic subgroups, and between newly admitted (hospitalization ≤ 7 days) and hospitalized patients (hospitalization > 7 days) and correlations between serological and cytokines. RESULTS Patients had a significantly higher SARS-CoV-2 seroprevalence (67.85 % [95% CI 62.20-73.02]) than hospital caregivers (27.08% [95% CI 21.29-33.77]), and had significantly higher global SARS-CoV-2 titers (F = 29.40, df = 2, p < 0.0001). Moreover, patients had a 2.51-fold (95% CI 1.95-3.20) higher SARS-CoV-2 exposure risk compared to hospital caregivers (Fisher's exact test, P < 0.0001). No difference was found in SARS-CoV-2 seroprevalence and titers between patient subgroups. Patients could be differentiated most accurately from hospital caregivers by their higher Spike protein titers (OR 136.54 [95% CI 43.08-481.98], P < 0.0001), lower S1 (OR 0.06 [95% CI 0.02-0.15], P < 0.0001) titers and higher IL-6 (OR 3.41 [95% CI 1.73-7.24], P < 0.0001) and TNF-α (OR 34.29 [95% CI 5.00-258.87], P < 0.0001) and lower titers of IL-8 (OR 0.13 [95% CI 0.05-0.30], P < 0.0001). Seropositive patients had significantly higher SARS-COV-2 antibody titers compared to seropositive hospital caregivers (F = 19.53, df = 2, P < 0.0001), while titers were not different in seronegative individuals. Pro-inflammatory cytokine concentrations were not associated with serological status. CONCLUSION Our work demonstrated a very high unrecognized exposure to SARS-CoV-2 among newly admitted and hospitalized psychiatric inpatients, which is cause for concern in the context of highly robust evidence of adverse outcomes following COVID-19 in psychiatric patients. Attention should be directed toward monitoring and mitigating exposure to infectious agents within psychiatric hospitals.
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Affiliation(s)
- K El Abdellati
- Collaborative Antwerp Psychiatric Research Institute (CAPRI), University of Antwerp, Antwerp, Belgium; Scientific Initiative of Neuropsychiatric and Psychopharmacological Studies (SINAPS), University Psychiatric Centre Duffel, Duffel, Belgium.
| | - A Lucas
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), plateau We-Met, Inserm UMR1297 and Université Paul Sabatier, Toulouse, France
| | - H Perron
- GeNeuro, Plan-les-Ouates, Geneva, Switzerland; Geneuro-Innovation, Lyon, France
| | - R Tamouza
- INSERM U955 IMRB, Translational Neuropsychiatry laboratory, AP-HP, Hôpital Henri Mondor, DMU IMPACT, Fédération Hospitalo-Universitaire de Médecine de Précision en Psychiatrie (FHU ADAPT), Paris Est Créteil University, Fondation FondaMental, 94010 Créteil, France; ECNP Immuno-NeuroPsychiatry Network
| | - I Nkam
- INSERM U955 IMRB, Translational Neuropsychiatry laboratory, AP-HP, Hôpital Henri Mondor, DMU IMPACT, Fédération Hospitalo-Universitaire de Médecine de Précision en Psychiatrie (FHU ADAPT), Paris Est Créteil University, Fondation FondaMental, 94010 Créteil, France
| | - J-R Richard
- INSERM U955 IMRB, Translational Neuropsychiatry laboratory, AP-HP, Hôpital Henri Mondor, DMU IMPACT, Fédération Hospitalo-Universitaire de Médecine de Précision en Psychiatrie (FHU ADAPT), Paris Est Créteil University, Fondation FondaMental, 94010 Créteil, France
| | - S Fried
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), plateau We-Met, Inserm UMR1297 and Université Paul Sabatier, Toulouse, France
| | - C Barau
- Plateforme de resources biologiques, Hôpital Universitaire Henri Mondor, Université Paris Est Créteil, Créteil, France
| | - N Djonouma
- Département Hospitalo-Universitaire de psychiatrie et d'addictologie des hopitaux Henri Mondor, Créteil, France
| | - A Pinot
- INSERM U955 IMRB, Translational Neuropsychiatry laboratory, AP-HP, Hôpital Henri Mondor, DMU IMPACT, Fédération Hospitalo-Universitaire de Médecine de Précision en Psychiatrie (FHU ADAPT), Paris Est Créteil University, Fondation FondaMental, 94010 Créteil, France
| | - S Fourati
- Department of Virology, INSERM U955, Team « Viruses, Hepatology, Cancer », Hôpitaux Universitaires Henri Mondor, Assistance Publique - Hôpitaux de Paris, Créteil, France
| | - C Rodriguez
- Department of Virology, INSERM U955, Team « Viruses, Hepatology, Cancer », Hôpitaux Universitaires Henri Mondor, Assistance Publique - Hôpitaux de Paris, Créteil, France
| | - V Coppens
- Collaborative Antwerp Psychiatric Research Institute (CAPRI), University of Antwerp, Antwerp, Belgium; Scientific Initiative of Neuropsychiatric and Psychopharmacological Studies (SINAPS), University Psychiatric Centre Duffel, Duffel, Belgium
| | - U Meyer
- ECNP Immuno-NeuroPsychiatry Network; Institute of Pharmacology and Toxicology, University of Zürich-Vetsuisse, Zürich, Switzerland; Neuroscience Center Zürich, Zürich, Switzerland
| | - M Morrens
- Collaborative Antwerp Psychiatric Research Institute (CAPRI), University of Antwerp, Antwerp, Belgium; Scientific Initiative of Neuropsychiatric and Psychopharmacological Studies (SINAPS), University Psychiatric Centre Duffel, Duffel, Belgium
| | - L De Picker
- Collaborative Antwerp Psychiatric Research Institute (CAPRI), University of Antwerp, Antwerp, Belgium; Scientific Initiative of Neuropsychiatric and Psychopharmacological Studies (SINAPS), University Psychiatric Centre Duffel, Duffel, Belgium; ECNP Immuno-NeuroPsychiatry Network
| | - M Leboyer
- INSERM U955 IMRB, Translational Neuropsychiatry laboratory, AP-HP, Hôpital Henri Mondor, DMU IMPACT, Fédération Hospitalo-Universitaire de Médecine de Précision en Psychiatrie (FHU ADAPT), Paris Est Créteil University, Fondation FondaMental, 94010 Créteil, France; ECNP Immuno-NeuroPsychiatry Network
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7
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Barrios MH, Nicholson S, Bull RA, Martinello M, Rawlinson W, Mina M, Post JJ, Hudson B, Gilroy N, Lloyd AR, Konecny P, Mordant F, Catton M, Subbarao K, Caly L, Druce J, Netter HJ. Comparative Longitudinal Serological Study of Anti-SARS-CoV-2 Antibody Profiles in People with COVID-19. Microorganisms 2023; 11:1985. [PMID: 37630545 PMCID: PMC10458948 DOI: 10.3390/microorganisms11081985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/10/2023] [Accepted: 07/21/2023] [Indexed: 08/27/2023] Open
Abstract
Serological diagnostic assays are essential tools for determining an individual's protection against viruses like SARS-CoV-2, tracking the spread of the virus in the community, and evaluating population immunity. To assess the diversity and quality of the anti-SARS-CoV-2 antibody response, we have compared the antibody profiles of people with mild, moderate, and severe COVID-19 using a dot blot assay. The test targeted the four major structural proteins of SARS-CoV-2, namely the nucleocapsid (N), spike (S) protein domains S1 and S2, and receptor-binding domain (RBD). Serum samples were collected from 63 participants at various time points for up to 300 days after disease onset. The dot blot assay revealed patient-specific differences in the anti-SARS-CoV-2 antibody profiles. Out of the 63 participants with confirmed SARS-CoV-2 infections and clinical COVID-19, 35/63 participants exhibited diverse and robust responses against the tested antigens, while 14/63 participants displayed either limited responses to a subset of antigens or no detectable antibody response to any of the antigens. Anti-N-specific antibody levels decreased within 300 days after disease onset, whereas anti-S-specific antibodies persisted. The dynamics of the antibody response did not change during the test period, indicating stable antibody profiles. Among the participants, 28/63 patients with restricted anti-S antibody profiles or undetectable anti-S antibody levels in the dot blot assay also exhibited weak neutralization activity, as measured by a surrogate virus neutralization test (sVNT) and a microneutralization test. These results indicate that in some cases, natural infections do not lead to the production of neutralizing antibodies. Furthermore, the study revealed significant serological variability among patients, regardless of the severity of their COVID-19 illness. These differences need to be carefully considered when evaluating the protective antibody status of individuals who have experienced primary SARS-CoV-2 infections.
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Affiliation(s)
- Marilou H. Barrios
- Victorian Infectious Diseases Reference Laboratory (VIDRL), The Royal Melbourne Hospital, Melbourne, VIC 3000, Australia; (M.H.B.); (S.N.); (M.C.); (L.C.); (J.D.)
- Peter Doherty Institute, University of Melbourne, Melbourne, VIC 3000, Australia; (F.M.); (K.S.)
| | - Suellen Nicholson
- Victorian Infectious Diseases Reference Laboratory (VIDRL), The Royal Melbourne Hospital, Melbourne, VIC 3000, Australia; (M.H.B.); (S.N.); (M.C.); (L.C.); (J.D.)
- Peter Doherty Institute, University of Melbourne, Melbourne, VIC 3000, Australia; (F.M.); (K.S.)
| | - Rowena A. Bull
- The Kirby Institute, University of New South Wales (UNSW), Sydney, NSW 2052, Australia; (R.A.B.); (M.M.); (A.R.L.)
- School of Biomedical Sciences, Faculty of Medicine and Health, University of New South Wales (UNSW), Sydney, NSW 2052, Australia;
| | - Marianne Martinello
- The Kirby Institute, University of New South Wales (UNSW), Sydney, NSW 2052, Australia; (R.A.B.); (M.M.); (A.R.L.)
| | - William Rawlinson
- School of Biomedical Sciences, Faculty of Medicine and Health, University of New South Wales (UNSW), Sydney, NSW 2052, Australia;
- Serology and Virology Division, Department of Microbiology, New South Wales Health Pathology, Randwick, Sydney, NSW 2031, Australia
- Prince of Wales Hospital, Sydney, NSW 2031, Australia;
| | - Michael Mina
- Northern Beaches Hospital, Frenchs Forest, NSW 2086, Australia;
| | - Jeffrey J. Post
- Prince of Wales Hospital, Sydney, NSW 2031, Australia;
- School of Clinical Medicine, University of New South Wales (UNSW), Sydney, NSW 2052, Australia;
| | - Bernard Hudson
- Royal North Shore Hospital, Sydney, NSW 2065, Australia;
| | | | - Andrew R. Lloyd
- The Kirby Institute, University of New South Wales (UNSW), Sydney, NSW 2052, Australia; (R.A.B.); (M.M.); (A.R.L.)
| | - Pamela Konecny
- School of Clinical Medicine, University of New South Wales (UNSW), Sydney, NSW 2052, Australia;
- St. George Hospital, Sydney, NSW 2217, Australia
| | - Francesca Mordant
- Peter Doherty Institute, University of Melbourne, Melbourne, VIC 3000, Australia; (F.M.); (K.S.)
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, VIC 3000, Australia
| | - Mike Catton
- Victorian Infectious Diseases Reference Laboratory (VIDRL), The Royal Melbourne Hospital, Melbourne, VIC 3000, Australia; (M.H.B.); (S.N.); (M.C.); (L.C.); (J.D.)
- Peter Doherty Institute, University of Melbourne, Melbourne, VIC 3000, Australia; (F.M.); (K.S.)
| | - Kanta Subbarao
- Peter Doherty Institute, University of Melbourne, Melbourne, VIC 3000, Australia; (F.M.); (K.S.)
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, VIC 3000, Australia
- World Health Organization Collaborating Centre for Reference and Research on Influenza at the Peter Doherty Institute, Melbourne, VIC 3000, Australia
| | - Leon Caly
- Victorian Infectious Diseases Reference Laboratory (VIDRL), The Royal Melbourne Hospital, Melbourne, VIC 3000, Australia; (M.H.B.); (S.N.); (M.C.); (L.C.); (J.D.)
- Peter Doherty Institute, University of Melbourne, Melbourne, VIC 3000, Australia; (F.M.); (K.S.)
| | - Julian Druce
- Victorian Infectious Diseases Reference Laboratory (VIDRL), The Royal Melbourne Hospital, Melbourne, VIC 3000, Australia; (M.H.B.); (S.N.); (M.C.); (L.C.); (J.D.)
- Peter Doherty Institute, University of Melbourne, Melbourne, VIC 3000, Australia; (F.M.); (K.S.)
| | - Hans J. Netter
- Victorian Infectious Diseases Reference Laboratory (VIDRL), The Royal Melbourne Hospital, Melbourne, VIC 3000, Australia; (M.H.B.); (S.N.); (M.C.); (L.C.); (J.D.)
- Peter Doherty Institute, University of Melbourne, Melbourne, VIC 3000, Australia; (F.M.); (K.S.)
- School of Science, Royal Melbourne Institute of Technology (RMIT) University, Melbourne, VIC 3001, Australia
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8
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SARS-COV-2 IgG specific antibodies persistence in recovered COVID-19 individuals and its association with severity and time of illness. New Microbes New Infect 2023; 52:101096. [PMID: 36776158 PMCID: PMC9896850 DOI: 10.1016/j.nmni.2023.101096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/28/2023] [Accepted: 02/02/2023] [Indexed: 02/05/2023] Open
Abstract
In order to accurately interpret the immune response to COVID-19, it is critical to know how long serum antibodies to COVID-2 persist. This study aimed to describe the serum IgG responses to SARS-CoV-2 in patients with mild, moderate, and severe COVID-19 infection in Birjand, South Khorasan province, Iran. The study was performed on individuals whose COVID-19 disease was confirmed by RT-PCR and recovered from the disease. After completing the questionnaire, blood samples were collected from 4 different groups based on the time of the test at two, four, six, and eight months' post-recovery. Then, SARS-COV-2 virus-specific IgG nucleocapsid antibody level in patients was measured using the enzyme-linked immunosorbent assay (ELISA). In total, 206 patients (mean age 44.19 ± 14.9, 51% man) were included in the survey. Serum prevalence of specific IgG antibodies in patients with mild, moderate, and severe COVID-19 disease was 51.5%, 64% and 78.9%, respectively. Furthermore, serum prevalence of COVID-19 specific IgG antibody level in two, four, six, and eight months after recovery were 80.8, 69.1, 43.2 and 41.8%, respectively (p < 0.05). The multiple logistic regression model showed that the variables of age and the time elapsed after recovery had a significant relationship with the positive antibody test of recovered COVID-19 patients (P < 0.05). But other variables had no significant relationship with the result of antibody test (P > 0.05). In the present report, we attempted to characterize the antibody response against SARS-CoV-2 in patients with mild, moderate, and severe COVID-19, with the aim of better elucidating the humoral immune response after recovery from SARS-CoV-2 infection.
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9
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Tanaka S, Umezawa J, Yamaji T, Abe SK, Hamada A, Kobayashi O, Ushijima T, Inoue M. SARS-CoV-2 Antibody Response to Symptoms Indicative of COVID-19 in a Non-Infected Population in Japan: a Cross-Sectional Study. Jpn J Infect Dis 2023; 76:46-54. [PMID: 36184396 DOI: 10.7883/yoken.jjid.2022.093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This study was aimed at investigating differences in antibody titers indicative of the presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) between those who had experienced symptoms of coronavirus disease 2019 (COVID-19) and those who had not. We used data from a cross-sectional survey conducted at the National Cancer Center, Japan, of 434 individuals with no previous COVID-19 infection. The participants self-reported symptoms from the start of 2020. A generalized linear model was used to compare the mean SARS-CoV-2-specific IgG nucleocapsid protein (N-IgG) titer with estimated confidence intervals according to the onset of symptoms indicative of COVID-19. We observed a tendency toward an association between higher mean N-IgG titers and occurrence of high fever within the past 8 months (P = 0.053). The mean N-IgG titer was higher in those with prior symptoms (P = 0.03) and those with over three symptoms (P < 0.01) than in those without symptoms. The mean N-IgG titer was higher in those with symptoms and those with more symptoms that might indicate COVID-19 relative to those without symptoms, suggesting that transient but contained SARS-CoV-2 infection had occurred.
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Affiliation(s)
- Shiori Tanaka
- Division of Prevention, National Cancer Center, Japan
| | - Jun Umezawa
- Division of Cohort Research, National Cancer Center, Japan
| | - Taiki Yamaji
- Division of Epidemiology, Institute for Cancer Control, National Cancer Center, Japan
| | - Sarah K Abe
- Division of Prevention, National Cancer Center, Japan
| | - Akinobu Hamada
- Division of Molecular Pharmacology, National Cancer Center, Japan
| | - Osamu Kobayashi
- Department of Infectious Diseases, National Cancer Center, Japan
| | | | - Manami Inoue
- Division of Prevention, National Cancer Center, Japan
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10
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Dzananovic B, Williamson M, Nwaigwe C, Routray C. Clinical significance of anti-nucleocapsid-IgG sero-positivity in SARS-CoV-2 infection in hospitalized patients in North Dakota. World J Clin Infect Dis 2022; 12:50-60. [DOI: 10.5495/wjcid.v12.i2.50] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 08/02/2022] [Accepted: 09/21/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND During the peak of the coronavirus diseases 2019 (COVID-19) pandemic, clinicians actively studied the utility of various epidemiologic-clinical parameters to determine the prognosis for patients hospitalized with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Serum IgG antibody level, D-Dimer, C-reactive protein and neutrophil to lymphocyte ratio, etc. were studied to assess their association with the clinical course in hospitalized patients and predict who may be at increased risk for poor clinical outcome. However, the influence of SARS-CoV-2-anti-nucleocapsid-IgG antibody (IgG-N) sero-positivity on the clinical outcome of patients with COVID-19 is largely unknown.
AIM To study the influence of SARS-CoV-2 anti-nucleocapsid-IgG seropositivity on clinical course and diseases severity in hospitalized COVID-19 patients.
METHODS We conducted a retrospective study of adults admitted to a tertiary care community hospital in North Dakota with COVID-19. Included patients had severe COVID-19 disease or worse and so required supplemental oxygen on admission. They were serologically tested for SARS-CoV-2-anti-nuceocapsid-IgG (IgG-N). The IgG-N positive group were 26 patients and the IgG-N negative group had 33 patients. The groups received similar treatment for COVID-19 as approved by our healthcare system from Day 1 of admission until discharge or death. Measurable parameters for monitoring the patients’ clinical course included the following: Length of hospitalization (LOS), use of high flow nasal canula (HFNC), use of noninvasive bilevel positive pressure ventilation (BiPAP), admission into the intensive care unit, need for mechanical ventilation (VENT); and the patient outcome/discharge or death. Other variables included were age, gender and body-mass-index, and duration of symptoms before presentation. For each variable, the outcome was modeled as a function of SARS-CoV-2-IgG-N status (positive or negative) using a generalized linear model. For LOS-days, a negative binomial distribution was used as it had a better fit than a Poisson or Gaussian distribution as evidenced by a Pearson chi-square/df value closer to 1.0. All other outcomes utilized a binary logistic regression model.
RESULTS After a thorough examination of patient data, it was found that admission rates to the Intensive Care Unit, as well as the usage of BiPAP, HFNC and VENT support, in conjunction with patient outcomes, were not significantly different across IgG-N status. However, the LOS variable when assessed by IgG-N status was found to be significant (t value = 2.16, P value = 0.0349). IgG-N negative patients had higher than average LOS in comparison to IgG-N positive patients (15.12 vs 9.35 d). Even when removing the extreme value (an LOS of 158 d), IgG-N negative patients still had slightly higher than average stays (10.66 vs 9.35 d) but the relationship was no longer significant. For patient outcome/death, only age (numerical) was a significant predictor (F value = 4.66, P value = 0.0352). No other variables for any of the outcomes were significant predictors of clinical course or disease severity.
CONCLUSION Our study demonstrated that IgG-N seroconversion had no significant association with clinical outcomes in hospitalized COVID-19 patients.
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Affiliation(s)
- Bakir Dzananovic
- Department of Medicine, Idaho College of Osteopathic Medicine, Meridian, ID 83642, United States
| | - Mark Williamson
- Department of Biostatistics, Epidemiology and Research Design Core, University of North Dakota, Grand Forks, ND 58202, United States
| | - Casmiar Nwaigwe
- Department of Internal Medicine, University of North Dakota School of Medicine and Health Sciences, Minot, ND 58701, United States
| | - Chittaranjan Routray
- Family Medicine, University of North Dakota School of Medicine and Health Sciences, Minot, ND 58701, United States
- Department of Internal Medicine, Trinity Health, Minot, ND 58701, United States
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11
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Zhang Y, Zheng X, Sheng W, Liang H, Zhao Y, Zhu X, Yang R, Zhang Y, Dong X, Li W, Pei F, Ding L, Chang Z, Deng L, Yuan G, Yang Z, Zhu D, Yang X, Wang H. Alum/CpG Adjuvanted Inactivated COVID-19 Vaccine with Protective Efficacy against SARS-CoV-2 and Variants. Vaccines (Basel) 2022; 10:vaccines10081208. [PMID: 36016098 PMCID: PMC9413105 DOI: 10.3390/vaccines10081208] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/20/2022] [Accepted: 07/26/2022] [Indexed: 11/16/2022] Open
Abstract
Since the beginning of the COVID-19 pandemic, numerous variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have emerged, including five variants of concern (VOC) strains listed by the WHO: Alpha, Beta, Gamma, Delta and Omicron. Extensive studies have shown that most of these VOC strains, especially the currently dominant variant Omicron, can escape the host immune response induced by existing COVID-19 vaccines to different extents, which poses considerable risk to the health of human beings around the world. In the present study, we developed a vaccine based on inactivated SARS-CoV-2 and an adjuvant consisting of aluminum hydroxide (alum) and CpG. The immunogenicity and safety of the vaccine were investigated in rats. The candidate vaccine elicited high titers of SARS-CoV-2-spike-specific IgG antibody and neutralizing antibody in immunized rats, which not only neutralize the original SARS-CoV-2, but also showed great cross-neutralization activity against the Beta, Delta and Omicron variants.
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Affiliation(s)
- Yuntao Zhang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
- China National Biotec Group Company Limited, Beijing 100024, China
| | - Xiaotong Zheng
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Wang Sheng
- College of Life Sciences and Biotechnology, Beijing University of Technology, Beijing 100021, China;
| | - Hongyang Liang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Yuxiu Zhao
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Xiujuan Zhu
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Rong Yang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Yadan Zhang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Xiaofei Dong
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Weidong Li
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Fei Pei
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Ling Ding
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Zhen Chang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Li Deng
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Guangying Yuan
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Zhaona Yang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Di Zhu
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Xiaoming Yang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
- China National Biotec Group Company Limited, Beijing 100024, China
- Correspondence: (X.Y.); (H.W.)
| | - Hui Wang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
- Correspondence: (X.Y.); (H.W.)
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12
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Takeshita M, Nishina N, Moriyama S, Takahashi Y, Ishii M, Saya H, Kondo Y, Kaneko Y, Suzuki K, Fukunaga K, Takeuchi T. Immune evasion and chronological decrease in titer of neutralizing antibody against SARS-CoV-2 and its variants of concerns in COVID-19 patients. Clin Immunol 2022; 238:108999. [PMID: 35398519 PMCID: PMC8988444 DOI: 10.1016/j.clim.2022.108999] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/14/2021] [Accepted: 04/04/2022] [Indexed: 01/03/2023]
Abstract
Many variants of SARS-CoV-2 have emerged, and decreased neutralizing antibodies after vaccination and breakthrough infections have become a problem. The importance of monitoring titers of neutralizing antibodies is getting higher. We enrolled 146 COVID-19 patients, who were thought to be infected with Wuhan-hu-1 or D614G strains, and examined the time course of neutralizing titers against six concerning strains (Wuhan-hu-1, Alpha, Beta, Gamma, Kappa, and Delta) using newly developed ELISA. The acquisition of neutralizing titer was positively associated with disease severity. Immune evasions were observed approximately 20 to 30% for Alpha, Kappa, and Delta variant, and 40 to 45% for Beta and Gamma variant. The titers against all strains decreased over time, and interestingly, while titers against Wuhan-hu-1 decreased by 23%, those to Delta variant decreased by 70%. Our simple, cost-effective, and non-hazardous system will be applicable to process numerous samples, such as monitoring titers against prevalent strains after infection or vaccination.
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Affiliation(s)
- Masaru Takeshita
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan.
| | - Naoshi Nishina
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Saya Moriyama
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Yoshimasa Takahashi
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Hideyuki Saya
- Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo 162-8640, Japan
| | - Yasushi Kondo
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Yuko Kaneko
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Katsuya Suzuki
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Tsutomu Takeuchi
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
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13
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Štěpánek L, Janošíková M, Štěpánek L, Nakládalová M, Boriková A. The kinetics and predictors of anti-SARS-CoV-2 antibodies up to eight months after symptomatic COVID-19: a Czech cross-sectional study. J Med Virol 2022; 94:3731-3738. [PMID: 35419860 PMCID: PMC9088611 DOI: 10.1002/jmv.27784] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/06/2022] [Accepted: 04/12/2022] [Indexed: 11/08/2022]
Abstract
The presence of neutralizing SARS‐CoV‐2‐specific antibodies indicates protection against (re)infection, however, the knowledge of their long‐term kinetics is limited. This study analyzed the presence of COVID‐19‐induced antibodies in unvaccinated healthcare workers (HCWs) over the period of 1–8 months post symptom onset (SO) and explored the determinants of persisting immunoglobulin (Ig) seropositivity. Six hundred sixty‐two HCWs were interviewed for anamnestic data and tested for IgG targeting the spike protein (S1 and S2) and IgM targeting the receptor‐binding domain. A Cox regression model was used to explore potential predictors of seropositivity with respect to the time lapse between SO and serology testing. 82.9% and 44.7% of HCWs demonstrated IgG and IgM seropositivity, respectively, with a mean interval of 83 days between SARS‐CoV‐2 detection and serology testing. On average, HCWs reported seven symptoms in the acute phase lasting 20 days. IgG seropositivity rates among HCWs decreased gradually to 80%, 50%, and 35% at 3, 6, and 8 months after SO, while IgM seropositivity fell rapidly to 60%, 15%, and 0% over the same time intervals. The number of symptoms was the only predictor of persisting IgG seropositivity (odds ratio [OR] 1.096, 95% confidence interval [CI] 1.003–1.199, p = 0.043) and symptom duration a predictor of IgM seropositivity (OR 1.011, 95% CI 1.004–1.017, p = 0.002). Infection‐induced anti‐SARS‐CoV‐2 IgG rates drop to a third in seropositive participants over the course of 8 months. Symptom count and duration in the acute phase of COVID‐19 are both relevant to the subsequent kinetics of antibody responses.
60% and 35% of subjects maintain IgG seropositivity 6‐ and 8‐month post COVID‐19. Characteristics of the acute phase of COVID‐19 are relevant for antibody responses. The number of symptoms of acute COVID‐19 predicts persisting IgG seropositivity. Symptom duration predicts persisting IgM seropositivity. Anamnestic data may serve as simple predictors of seropositivity post COVID‐19.
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Affiliation(s)
- Ladislav Štěpánek
- Department of Occupational Medicine, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacký University Olomouc, I. P. Pavlova 185/6, 779 00, Olomouc, Czech Republic
| | - Magdaléna Janošíková
- Department of Occupational Medicine, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacký University Olomouc, I. P. Pavlova 185/6, 779 00, Olomouc, Czech Republic
| | - Lubomír Štěpánek
- Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University, Salmovská 1, 120 00 Praha 2, Czech Republic
| | - Marie Nakládalová
- Department of Occupational Medicine, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacký University Olomouc, I. P. Pavlova 185/6, 779 00, Olomouc, Czech Republic
| | - Alena Boriková
- Department of Occupational Medicine, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacký University Olomouc, I. P. Pavlova 185/6, 779 00, Olomouc, Czech Republic
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14
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Guo Y, Meng J, Liu C, Chen G, Chi Y, Zheng S, Wang H. How to Deal With Vaccine Breakthrough Infection With SARS-CoV-2 Variants. Front Public Health 2022; 10:842303. [PMID: 35372196 PMCID: PMC8965021 DOI: 10.3389/fpubh.2022.842303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/08/2022] [Indexed: 01/17/2023] Open
Abstract
Novel Coronary Pneumonia is the most infectious disease with the highest number of morbidity and mortality in 100 years. Despite aggressive and effective COVID-19 prevention and control measures, countries have been unable to stop its outbreaks. With the widespread use of vaccines, the occurrence of COVID-19 has declined markedly. April 21, 2021, New York scholars reported Vaccine Breakthrough Infections with SARS-CoV-2 Variants, which immediately attracted widespread attention. In this mini-review, we focus on the characteristics of SARS-CoV-2 and its mutant strains and vaccine breakthrough infections. We have found that outbreaks of vaccine-breaking SARS-CoV-2 Delta infections in many countries are primarily the result of declining vaccine-generated antibody titers and relaxed outbreak management measures. For this reason, we believe that the main response to vaccine-breaking infections with the SARS-CoV-2 variant is to implement a rigorous outbreak defense policy and vaccine application. Only by intensifying the current vaccination intensity, gradually improving the vaccine and its application methods, and strengthening non-pharmaceutical measures such as travel restrictions, social distancing, masking and hand hygiene, can the COVID-19 outbreak be fully controlled at an early date.
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Affiliation(s)
- Ying Guo
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Jun Meng
- Department of Respiratory Medicine, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Caide Liu
- Department of General Practice, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Guosheng Chen
- General Practice Teaching and Research Section, Weifang Medical University, Weifang, China
| | - Yuhua Chi
- Department of General Practice, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Shiliang Zheng
- Department of General Practice, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Haixia Wang
- Department of Blood Transfusion, Affiliated Hospital of Weifang Medical University, Weifang, China
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15
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Almeida R, Desormais I, Taton P, Morales E, Reis A, Simba Y. COVID immunity in the Angolan population: Serological study with Abbott COVID-19 IgG/IgM Rapid Test and serological mini VIDAS BIOMERIEUX test. MGM JOURNAL OF MEDICAL SCIENCES 2022. [DOI: 10.4103/mgmj.mgmj_91_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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16
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Cappuccilli M, Bruno PF, Spazzoli A, Righini M, Flachi M, Semprini S, Grumiro L, Marino MM, Schiavone P, Fabbri E, Fantini M, Buscaroli A, Rigotti A, La Manna G, Sambri V, Mosconi G. Persistence of Antibody Responses to the SARS-CoV-2 in Dialysis Patients and Renal Transplant Recipients Recovered from COVID-19. Pathogens 2021; 10:1289. [PMID: 34684237 PMCID: PMC8541005 DOI: 10.3390/pathogens10101289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/27/2021] [Accepted: 10/04/2021] [Indexed: 12/14/2022] Open
Abstract
Nephropathic subjects with impaired immune responses show dramatically high infection rates of coronavirus disease 2019 (COVID-19). This work evaluated the ability to acquire and maintain protective antibodies over time in 26 hemodialysis patients and 21 kidney transplant recipients. The subjects were followed-up through quantitative determination of circulating SARS-CoV-2 S1/S2 IgG and neutralizing antibodies in the 6-month period after clinical and laboratory recovery. A group of 143 healthcare workers with no underlying chronic pathologies or renal diseases recovered from COVID was also evaluated. In both dialysis and transplanted patients, antibody titers reached a zenith around the 3rd month, and then a decline occurred on average between the 270th and 300th day. Immunocompromised patients who lost antibodies around the 6th month were more common than non-renal subjects, although the difference was not significant (38.5% vs. 26.6%). Considering the decay of antibody levels below the positivity threshold (15 AU/mL) as "failure", a progressive loss of immunisation was found in the overall population starting 6 months after recovery. A longer overall antibody persistence was observed in severe forms of COVID-19 (p = 0.0183), but within each group, given the small number of patients, the difference was not significant (dialysis: p = 0.0702; transplant: p = 0.1899). These data suggest that immunocompromised renal patients recovered from COVID-19 have weakened and heterogeneous humoral responses that tend to decay over time. Despite interindividual variability, an association emerged between antibody persistence and clinical severity, similar to the subjects with preserved immune function.
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Affiliation(s)
- Maria Cappuccilli
- Nephrology, Dialysis and Renal Transplant Unit, IRCCS-Azienda Ospedaliero-Universitaria di Bologna, Alma Mater Studiorum University of Bologna, 40138 Bologna, Italy; (M.C.); (G.L.M.)
| | - Paolo Ferdinando Bruno
- Nephrology and Dialysis Unit, AUSL Romagna Morgagni-Pierantoni Hospital, 47121 Forlì, Italy; (P.F.B.); (A.S.)
| | - Alessandra Spazzoli
- Nephrology and Dialysis Unit, AUSL Romagna Morgagni-Pierantoni Hospital, 47121 Forlì, Italy; (P.F.B.); (A.S.)
| | - Matteo Righini
- Nephrology and Dialysis Unit, AUSL Romagna S. Maria delle Croci Hospital, 48121 Ravenna, Italy; (M.R.); (A.B.)
| | - Marta Flachi
- Nephrology and Dialysis Unit, AUSL Romagna Infermi Hospital, 47923 Rimini, Italy; (M.F.); (A.R.)
| | - Simona Semprini
- Unit of Microbiology, AUSL Romagna Laboratory, 47023 Pievesestina, Italy; (S.S.); (L.G.); (M.M.M.); (P.S.); (V.S.)
| | - Laura Grumiro
- Unit of Microbiology, AUSL Romagna Laboratory, 47023 Pievesestina, Italy; (S.S.); (L.G.); (M.M.M.); (P.S.); (V.S.)
| | - Maria Michela Marino
- Unit of Microbiology, AUSL Romagna Laboratory, 47023 Pievesestina, Italy; (S.S.); (L.G.); (M.M.M.); (P.S.); (V.S.)
| | - Pasqua Schiavone
- Unit of Microbiology, AUSL Romagna Laboratory, 47023 Pievesestina, Italy; (S.S.); (L.G.); (M.M.M.); (P.S.); (V.S.)
| | - Elisabetta Fabbri
- Local Healthcare Authority of Romagna (AUSL Romagna), 48121 Ravenna, Italy; (E.F.); (M.F.)
| | - Michela Fantini
- Local Healthcare Authority of Romagna (AUSL Romagna), 48121 Ravenna, Italy; (E.F.); (M.F.)
| | - Andrea Buscaroli
- Nephrology and Dialysis Unit, AUSL Romagna S. Maria delle Croci Hospital, 48121 Ravenna, Italy; (M.R.); (A.B.)
| | - Angelo Rigotti
- Nephrology and Dialysis Unit, AUSL Romagna Infermi Hospital, 47923 Rimini, Italy; (M.F.); (A.R.)
| | - Gaetano La Manna
- Nephrology, Dialysis and Renal Transplant Unit, IRCCS-Azienda Ospedaliero-Universitaria di Bologna, Alma Mater Studiorum University of Bologna, 40138 Bologna, Italy; (M.C.); (G.L.M.)
| | - Vittorio Sambri
- Unit of Microbiology, AUSL Romagna Laboratory, 47023 Pievesestina, Italy; (S.S.); (L.G.); (M.M.M.); (P.S.); (V.S.)
| | - Giovanni Mosconi
- Nephrology and Dialysis Unit, AUSL Romagna Morgagni-Pierantoni Hospital, 47121 Forlì, Italy; (P.F.B.); (A.S.)
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