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Abstract

A nosocomial outbreak of SARS-CoV-2 Delta variant infected 42 patients, staff and family members; 39 were fully vaccinated. The attack rate was 10.6% (16/151) among exposed staff and reached 23.7% (23/97) among exposed patients in a highly vaccinated population, 16–26 weeks after vaccination (median: 25 weeks). All cases were linked and traced to one patient. Several transmissions occurred between individuals wearing face masks. Fourteen of 23 patients became severely sick or died, raising a question about possible waning immunity.

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/content/10.2807/1560-7917.ES.2021.26.39.2100822
2021-09-30
2021-11-27
http://instance.metastore.ingenta.com/content/10.2807/1560-7917.ES.2021.26.39.2100822
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