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. 2020 Jul 29;20:203. doi: 10.1186/s12890-020-01237-0

Table 4.

Seroprevalence of recruited healthcare workers stratified by exposure to COVID-19 patients

No-contact Contact with Covid-19 patients p-value
IgG, n (95% CI) 9/44; 6.8% (−0.6–14.2%) 12/158; 7.6% (3.5%; 11.7%) 0.86
IgM, n (95% CI) 7/44; 15.9% (5.1–26.7%) 22/158; 13.9% (8.5–26.7%) 0.74