Prevalence of SARS-CoV-2 antibodies among Swiss hospital workers: Results of a prospective cohort study.
Philipp P KohlerChristian R KahlertJohannes SumerDomenica FlurySabine GüsewellOnicio B Leal-NetoJulia NotterWerner C AlbrichBaharak Babouee FluryAllison J McGeerStefan P KusterLorenz RischMatthias SchlegelPietro VernazzaPublished in: Infection control and hospital epidemiology (2020)
In this prospective cohort of 1,012 Swiss hospital employees, 3 different assays were used to screen serum for SARS-CoV-2 antibodies. Seropositivity was 1%; the positive predictive values of the lateral-flow immunoassay were 64% (IgG) and 13% (IgM). History of fever and myalgia most effectively differentiated seropositive and seronegative participants.