Eurosurv. An outbreak caused by the SARS-CoV-2 Delta (B.1.617.2) variant in a care home after partial vaccination with a single dose of the COVID-19 vaccine Vaxzevria, London, England, April 2021

[tetano]

• Sarah V Williams^1,* , Amoolya Vusirikala^1,* , Shamez N Ladhani¹ , Elena Fernandez Ruiz De Olano ² , Nalini Iyanger² , Felicity Aiano¹ , Kelly Stoker¹ , Guduru Gopal Rao³ , Laurence John³ , Bharat Patel¹ , Nick Andrews¹ , Gavin Dabrera¹ , Mary Ramsay¹ , Kevin E Brown¹ , Jamie Lopez Bernal¹ , Vanessa Saliba¹

We investigated a COVID-19 outbreak of the SARS-CoV-2 Delta variant of concern in a London care home, where 8/21 residents and 14/21 staff had received a single dose of Vaxzevria (ChAdOx1-S; AstraZeneca) vaccine. We identified 24 SARS-CoV-2 infections (16 residents, 8 staff) among 40 individuals (19 residents, 21 staff); four (3 residents, 1 staff) were hospitalised, and none died. The attack rate after one vaccine dose was 35.7% (5/14) for staff and 81.3% (13/16) for residents.

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https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2021.26.27.2100626#html_fulltext