The Proportion of SARS-CoV-2 Infections That Are Asymptomatic

Abstract

Background:

Asymptomatic infection seems to be a notable feature of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the pathogen that causes coronavirus disease 2019 (COVID-19), but the prevalence is uncertain.

Purpose:

To estimate the proportion of persons infected with SARS-CoV-2 who never develop symptoms.

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