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Abstract

Evidence on COVID-19 vaccine efficacy/effectiveness (VE) in preventing asymptomatic SARS-CoV-2 infections is needed to guide public health recommendations for vaccinated people. We report interim results of a living systematic review. We identified a total of 30 studies that investigated VE against symptomatic and/or asymptomatic infection. In fully vaccinated individuals, VE against symptomatic and asymptomatic infections was 80–90% in nearly all studies. Fully vaccinated persons are less likely to become infected and contribute to transmission.

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/content/10.2807/1560-7917.ES.2021.26.28.2100563
2021-07-15
2021-10-16
http://instance.metastore.ingenta.com/content/10.2807/1560-7917.ES.2021.26.28.2100563
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