Some serological studies have identified higher anti-SARS-CoV-2 IgG antibody levels in non-White ethnic groups38, 39, 40, and ethnicity has been linked to relative risks of SARS-CoV-2 infection and severe disease41, yet there is limited previous research on ethnicity differences in mucosal IgA response to COVID-19. The gene discussed is CD79A; the disease is COVID-19.