Article

Waning effectiveness of BNT162b2 and ChAdOx1 COVID-19 vaccines over six months since second dose: a cohort study using linked electronic health records

2022-03-23

Abstract excerpt

<h4>Summary</h4> <h4>Background</h4> The rate at which COVID-19 vaccine effectiveness wanes over time is crucial for vaccination policies, but is incompletely understood with conflicting results from different studies. <h4>Methods</h4> This cohort study, using the OpenSAFELY-TPP database and approved by NHS England, included individuals without prior SARS-CoV-2 infection assigned to vaccines priority groups 2-12 d...

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Literature Corpus work: 59bf629f-481a-50f4-b146-0293d030f494
DOI: 10.1101/2022.03.23.22272804

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