CD79A and COVID-19: In the present study, we compared SARS-CoV-2 spike antigen-specific serum IgA and IgG expression as well as virus neutralization potential in individuals vaccinated with five different COVID-19 vaccines, including mRNA vaccines from Pfizer-BioNTech and Moderna, viral DNA vectored vaccines from Johnson & Johnson, Oxford-AstraZeneca, and Sputnik-V, as well as the inactivated virus vaccine from Sinopharm (BIBP COVID-19-vaccine).