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Table 4 Seroprevalence of recruited healthcare workers stratified by exposure to COVID-19 patients

From: SARS-CoV-2 specific serological pattern in healthcare workers of an Italian COVID-19 forefront hospital

  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