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

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

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.


https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2021.26.49.2101070#html_fulltext