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. 2021 Dec;26(49):2101070.
doi: 10.2807/1560-7917.ES.2021.26.49.2101070.

Increasing risk of breakthrough COVID-19 in outbreaks with high attack rates in European long-term care facilities, July to October 2021

Carl Suetens  1 , Pete Kinross  1 , Pilar Gallego Berciano  2 , Virginia Arroyo Nebreda  2 , Eline Hassan  3 , Clémentine Calba  4 , Eugenia Fernandes  5 , Andre Peralta-Santos  5 , Pedro Casaca  5 , Nathalie Shodu  6 , Sara Dequeker  6 , Flora Kontopidou  7 , Lamprini Pappa  7 , Oliver Kacelnik  8 , Anita Wang Børseth  8 , Lois O'Connor  9 , Patricia Garvey  9 , Rasa Liausedienė  10 , Rolanda Valintelienė  11 , Corinna Ernst  12 , Joël Mossong  12 , Mária Štefkovičová  13   14 , Zuzana Prostináková  13 , Ann Caroline Danielsen  1 , Aikaterini Mougkou  1 , Favelle Lamb  1 , Orlando Cenciarelli  1 , Dominique L Monnet  1 , Diamantis Plachouras  1
Affiliations

Increasing risk of breakthrough COVID-19 in outbreaks with high attack rates in European long-term care facilities, July to October 2021

Carl Suetens et al. Euro Surveill. 2021 Dec.

Abstract

We collected data from 10 EU/EEA countries on 240 COVID-19 outbreaks occurring from July-October 2021 in long-term care facilities with high vaccination coverage. Among 17,268 residents, 3,832 (22.2%) COVID-19 cases were reported. Median attack rate was 18.9% (country range: 2.8-52.4%), 17.4% of cases were hospitalised, 10.2% died. In fully vaccinated residents, adjusted relative risk for COVID-19 increased with outbreak attack rate. Findings highlight the importance of early outbreak detection and rapid containment through effective infection prevention and control measures.

Keywords: COVID-19; long-term care facilities; outbreaks; vaccines.

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Conflict of interest statement

Conflict of interest: None declared.

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