Studying the ecological niches of species and their responses to climate change can provide better conservation strategies for these species. Myrothamnaceae is endemic to Africa, comprising only two species that belong to Myrothamnus (M. flabellifolius and M. moschatus). These closely related species exhibit allopatric distributions, positioning them as ideal materials for studying the species ecological adaptation. This study explores the ecological niche differentiation between M. flabellifolius and M. moschatus and their response capabilities to future climate change. The results indicate that M. flabellifolius and M. moschatus have undergone niche differentiation. The main drivers of niche differences are the minimum temperature of the coldest month (Bio6) for M. flabellifolius, precipitation of the driest month (Bio14), and precipitation of the coldest quarter (Bio19) for M. moschatus. M. flabellifolius demonstrated a stronger adaptation to environments characterized by lower precipitation, relatively lower temperatures, and greater annual temperature variations compared to M. moschatus. Under future climate scenarios (SSP5-8.5, 2081-2100 years), the results show that approximately 85% of the total suitable habitat for M. flabellifolius will be lost, with an 85% reduction in high-suitability areas and almost complete loss of the original mid-low suitability areas. Concurrently, about 29% of the total suitable habitat for M. moschatus will be lost, with a 34% reduction in high suitability areas and roughly 60% of the original mid-low suitability areas becoming unsuitable. This suggests that M. flabellifolius will face greater threats under future climate change. This study contributes novel insight into niche differentiation in Myrothamnaceae and provides useful information for the conservation of this distinctive African lineage.

The transmission of diseases by blood products continues to be a worldwide health problem, especially in Africa. Seroprevalence rates of the Hepatitis B virus (HBV), Hepatitis C virus (HCV), Human Immunodeficiency Virus (HIV), Syphilis, and Coinfection in Angola are poorly documented. This study aims to identify the seroprevalence of markers with positive results for Hepatitis B, C, HIV, Syphilis, and Coinfection in blood donors.

A retrospective study was conducted using a database of positive serological markers for these infections and coinfection in 2734 blood donors traced from 2011 to 2016 in Luanda, Angola. The Chi-Square test (χ2) or Fisher's exact test was used to evaluate serological positivity and donors' characteristics. A p-value < 0.05 was considered statistically significant.

2734 blood donors aged 18 to 64 (median age 32 ± 9) were screened from 2011 to 2016. 73.9 % of the donors were positive for one Transfusion-Transmitted Infection (TTI), and 5.9 % showed evidence of multiple infections. The overall seroprevalence rate was 50.2 % (1373) for HBV, 20 % (436) for Syphilis, 7 % (191) for HIV, 5.1 % (140) for HCV, and 5.8 % for coinfected donors. 2467 (90 %) were men, and 267 (10 %) were women. We identified 118 (5.8 %) coinfected donors. Of those, 40 (33.9 %) simultaneously presented Hepatitis B virus surface antigen (HBsAg)/Syphilis, 24 (20.3 %) HBsAg/HIV, 22 (18.6 %) HBsAg/HCV, 20 (16.9 %) HIV/Syphilis, 8 (6.8 %) HCV/Syphilis, and 4 (3.4 %) HIV/HCV.

A high transfusion-transmissible infection prevalence was found compared to some countries in Sub-Saharan Africa. Therefore, intensifying the screening for these transfusion-transmitted infections in blood donors is critical to ensure blood safety.

In Ethiopia, malnutrition among older adults is under detected and, neglected area because the entire problem related with aging considered as fate of aging. Also, older adults are often omitted from public health research. Literatures are scarce in Ethiopia; there is limited information in the current study area among older adults using Min Nutritional Assessment (MNA). Therefore, this paper investigated the prevalence of malnutrition and its predictors among older adults people aged 65 years or above in Addis Ababa, Ethiopia.

A community-based cross-sectional study was employed from January 1 to march 30, 2020 in Addis Ababa. Nutritional status of the older adults was measured by using Min nutritional assessment (MNA). Data from 662 older adults were collected through face to face interviews using a structured questionnaire. Bivariable and multivariable logistic regression analysis was done to identify factors associated with malnutrition.

The prevalence of malnutrition among older adults was found to be 26.6%[95% Confidence interval (CI):22.8, 30.1]. Depression [Adjusted Odds Ratio (AOR) = 7.57 95%CI: 5.01, 11.45], being poor [AOR = 1.95 95% CI: 1.166, 3.25], occupation; daily laborer and guard [AOR = 2.78 95% CI: 1.12, 7.17] and being old old [AOR = 2.62 95% CI: 1.62, 4.25] were significantly associated with the higher odds of malnutrition.

This study illustrated that considerably high proportion of older adults were malnourished in Addis Ababa. Socio-economic characteristics and depression were significantly associated with malnutrition. Therefore, nutritional and social support activities are essential for older adults, particularly of those who are socio-economically disadvantaged and advanced age. In addition, regular nutritional screening and management as well as behavioral interventions should be strengthened as a pillar component of therapeutic interventions. Specific nutritional requirements, at later stages of life is changing, and with the population aged over 65 years increasing in low-income countries like Ethiopia, the research in this field is likely to increase further.

To determine hepatitis C virus (HCV) infection prevalence in each country of the Middle-East and the overall prevalence of the region.

In this systematic review, we gathered all documents related to HCV infection prevalence among hemodialysis patients in 17 middle-east countries from April 2006 to March 2016. We selected only cross-sectional studies that had proper sampling and measurement methods as well as a valid statistical analysis.

After screening of 7311 documents, 56 studies were selected reporting the prevalence of HCV infection among hemodialysis patients from 10 countries of the region. Seven countries including United Arab Emirates, Afghanistan, Qatar, Bahrain, Kuwait, Oman, Israel, and Cyprus did not have any relevant document; thus, their latest reports were just mentioned. We performed the meta-analysis and determined the prevalence rates for each country as well as the whole region. The overall HCV infection prevalence among hemodialysis patients in the region was reported to be 25.3%; Egypt and Syria had the highest reported rates while Iran and Lebanon had the lowest. Further investigations are still needed to provide more reliable databases, find main risk factors, and to improve diagnosis and treatment plans, particularly in higher prevalent countries.

Controlling the prevalence and improving the management methods of HCV infection among hemodialysis patients are of a great concern in the Middle-East region.