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Volume 28, Number 10—October 2022
Research Letter

Identifying Contact Risks for SARS-CoV-2 Transmission to Healthcare Workers during Outbreak on COVID-19 Ward

Marius Zeeb1Comments to Author , Dana Weissberg1, Silvana K. Rampini, Rouven Müller, Thomas Scheier, Walter Zingg, Roger D. Kouyos2, and Aline Wolfensberger2
Author affiliations: University Hospital Zurich and University of Zurich, Zurich, Switzerland (M. Zeeb, D. Weissberg, S.K. Rampini, R. Müller, T. Scheier, W. Zingg, R.D. Kouyos, A. Wolfensberger); Institute of Medical Virology, Zurich, Switzerland (M. Zeeb, R.D. Kouyos)

Main Article


Number of different exposures to SARS-CoV-2 for total HCW population, HCW who tested positive, and HCW who tested negative during outbreak in hospital ward, Switzerland, October–November 2020*

Type of contact No. (%) HCWs
All SARS-CoV-2–positive SARS-CoV-2–negative
All contacts 50 (100) 18 (36) 32 (64)
Shifts with patient contact using SPM 69 (13.9) 24 (20.2) 45 (11.9)
Shifts with patient contact using IPM 143 (28.8) 31 (26.1) 112 (29.7)
Shifts with HCW contact 284 (57.3) 64 (53.8) 220 (58.4)

*IPM, isolation precaution measure; SPM, standard precaution measure; HCW, healthcare worker.

Main Article

1These first authors contributed equally to this article.

2These senior authors contributed equally to this article.

Page created: July 31, 2022
Page updated: September 21, 2022
Page reviewed: September 21, 2022
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