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. 2021 May;42(5):604-608.
doi: 10.1017/ice.2020.1244. Epub 2020 Oct 8.

Prevalence of SARS-CoV-2 antibodies among Swiss hospital workers: Results of a prospective cohort study

Philipp P Kohler #  1 , Christian R Kahlert #  1   2 , Johannes Sumer  1 , Domenica Flury  1 , Sabine Güsewell  3 , Onicio B Leal-Neto  4   5 , Julia Notter  1 , Werner C Albrich  1 , Baharak Babouee Flury  1 , Allison McGeer  6 , Stefan Kuster  7 , Lorenz Risch  8 , Matthias Schlegel  1 , Pietro Vernazza  1
Affiliations

Prevalence of SARS-CoV-2 antibodies among Swiss hospital workers: Results of a prospective cohort study

Philipp P Kohler et al. Infect Control Hosp Epidemiol. 2021 May.

Abstract

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.

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Conflict of interest statement

All authors report no conflicts of interest relevant to this article.

Figures

Fig. 1.
Fig. 1.
Results from baseline serology testing (n = 1,012) and from 4-week follow-up (n = 58). Cases with discrepant results between baseline and follow-up are highlighted with arrows.
See this image and copyright information in PMC

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