Eurosurv. Efficacy and effectiveness of COVID-19 vaccines against SARS-CoV-2 infection: interim results of a living systematic review, 1 January to 14

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• Thomas Harder[SUP]1[/SUP] , Judith Koch[SUP]1[/SUP] , Sabine Vygen-Bonnet[SUP]1[/SUP] , Wiebe Külper-Schiek[SUP]1[/SUP] , Antonia Pilic[SUP]1[/SUP] , Sarah Reda[SUP]1[/SUP] , Stefan Scholz[SUP]1[/SUP] , Ole Wichmann[SUP]1[/SUP]

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.

full article


https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2021.26.28.2100563#html_fulltext