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Effectiveness of the CoronaVac vaccine in the elderly population during a Gamma variant-associated epidemic of COVID-19 in Brazil: A test-negative case-control study

2021-05-21

Abstract excerpt

<h4>ABSTRACT</h4> <h4>Objective</h4> To estimate the effectiveness of the inactivated whole-virus vaccine, CoronaVac, against symptomatic COVID-19 in the elderly population of São Paulo State, Brazil during widespread circulation of the Gamma variant. <h4>Design</h4> Test negative case-control study. <h4>Setting</h4> Health-care facilities in São Paulo State, Brazil. <h4>Participants</h4> 43,774 adults aged 70 yea...

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Literature Corpus work
9da341aa-3201-5f00-b41e-7861c5920f21
DOI
10.1101/2021.05.19.21257472
Open publication

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