Review
Copyright ©The Author(s) 2022.
World J Virol. Sep 25, 2022; 11(5): 221-236
Published online Sep 25, 2022. doi: 10.5501/wjv.v11.i5.221
Figure 1
Figure 1 Intranasal and oral coronavirus disease 2019 vaccines promise to induce both local and systemic immune responses. ACE2: Angiotensin-converting enzyme 2; DCs: Dendritic cells; Mф: Macrophages; NALT: Nasopharynx-associated lymphoid tissue; Ig: Immunoglobulin; TMPRSS2: Transmembrane serine protease 2.
Figure 2
Figure 2 Preclinical and clinical trials on intranasal/mucosal coronavirus disease 2019 vaccines. PIV5: Parainfluenza Virus 5; hPIV2: Human parainfluenza virus 2; NDV: Newcastle disease virus; VSV: Vesicular stomatitis virus; LAIV: Live attenuated influenza vaccine; RSV: Respiratory syncytial virus; COVID-19: Coronavirus disease 2019.