CHMP5 and cancer: Similarly, after adjusting for age, sex, HIV status, household size, and BCG vaccination history, the probability of SARS-CoV-2 seropositivity was lower in cancer patients compared to potential blood donors (total seropositivity: OR = 0.535, 95% CI = 0.380–0.753, p-value = 0.0003; spike protein: OR = 0.431, 95% CI = 0.318–0.585, p-value = 0.0001; Nucleocapsid protein: OR = 0.721, 95% CI = 0.526–0.989, p-value = 0.042) (Supplementary Table S2).