Corresponding Author: Susi Kriemler, MD, Epidemiology, Biostatistics and Prevention Institute (EBPI), University of Zurich, Hirschengraben 84, 8001 Zürich, Switzerland (susi.kriemlerwiget@uzh.ch).
Accepted for Publication: July 1, 2021.
Published Online: July 15, 2021. doi:10.1001/jama.2021.11880
Author Contributions: Dr Ulyte had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Drs Radtke and Ulyte are co–first authors.
Concept and design: All authors.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Radtke, Ulyte, Kriemler.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Ulyte.
Obtained funding: Puhan, Kriemler.
Administrative, technical, or material support: All authors.
Supervision: Puhan, Kriemler.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study is part of the Corona Immunitas research network, coordinated by the Swiss School of Public Health (SSPH+), and funded by fundraising of SSPH+ that includes funds of the Swiss Federal Office of Public Health and private funders (ethical guidelines for funding stated by SSPH+ were respected), by funds of the cantons of Switzerland (Vaud, Zurich, and Basel), and by institutional funds of the universities. Additional funding, specific to this study, was available from the University of Zurich Foundation.
Role of the Funder/Sponsor: The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
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