Fig 2: Association between occupational exposure and seroprevalence of SARS-CoV 2 IgG antibodies.Odds ratios of seropositivity given patient contact, non-COVID-19 patient contact, or COVID-19 patient contact compared to no patient contact, and (under the horizontal black line) given COVID-19 patient contact compared to non-COVID-19 patient contact. Odds ratios were calculated using two-sided Fisher’s exact test with n = 2149 (patient contact vs no patient contact), n = 1107 (non-COVID-19 patient contact vs no patient contact), n = 1267 (COVID-19 patient contact vs no patient contact), and n = 1764 (COVID-19 patient contact vs non-COVID-19 patient contact) independent individuals. No adjustment for multiple comparisons was applied. Data are presented as odds ratios and 95% confidence intervals. Source data are available as Source Data file.