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. 2021 Jun 22;325(24):2500-2502.
doi: 10.1001/jama.2021.6564.

Asymptomatic and Symptomatic SARS-CoV-2 Infections After BNT162b2 Vaccination in a Routinely Screened Workforce

Li Tang  1 , Diego R Hijano  2 , Aditya H Gaur  2 , Terrence L Geiger  3 , Ellis J Neufeld  4 , James M Hoffman  5 , Randall T Hayden  3
Affiliations

Asymptomatic and Symptomatic SARS-CoV-2 Infections After BNT162b2 Vaccination in a Routinely Screened Workforce

Li Tang et al. JAMA. .

Abstract

This study aims to describe an association between the Pfizer-BioNTech (BNT162b2) vaccine and decreased risk of symptomatic and asymptomatic infections with SARS-CoV-2 in hospital employees.

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Conflict of interest statement

Conflict of Interest Disclosures: Dr Neufeld reported serving as a consultant to Pfizer outside the submitted work. Dr Hayden reported serving on advisory boards for Roche Molecular, Quidel Corporation, and Inflammatix outside the submitted work. No other disclosures were reported.

Figures

Figure.
Figure.. Cumulative Incidence of COVID-19 Against SARS-CoV-2 Infections After the First Dose
A total of 2165 unvaccinated employees and 3052 vaccinated employees were included. A, Any SARS-CoV-2 infection among St Jude employees during follow-up. B, Asymptomatic infections identified through routine asymptomatic screening; SARS-CoV-2 cases through testing based on the presence of symptoms or known COVID-19 exposure were treated as competing risks. C, Positive results via testing based on the presence of symptoms or known COVID-19 exposure; positive results from asymptomatic screening were treated as competing risks. Shaded areas are 95% CIs.
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