Bivariate analysis indicated that occupation, period of HIV infection diagnosis, type of antiretroviral therapy and CD4 count were significantly (p<0.05) associated with SARS-CoV-2 infection (Tables 3 and 4), but, after adjustment for potential confounders, only occupation and type of treatment were remaining as factors associated with SARS-CoV-2 infection. The gene discussed is CD4; the disease is HIV infectious disease.