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Vaccine effectiveness of Pfizer-BioNTech and Oxford-AstraZeneca to prevent severe COVID-19 in Costa Rica by September and October 2021: A nationwide, observational study of hospitalisations prevalence

2021-11-09

Abstract excerpt

<h4>Objective</h4> To estimate the dose-dependent effectiveness of coronavirus disease (COVID-19) vaccines to prevent severe illness in real-world conditions of Costa Rica, after the Delta variant became dominant. <h4>Design</h4> Observational study; secondary analysis of hospitalisation prevalence. <h4>Setting</h4> Nationwide adult population, Costa Rica. <h4>Participants</h4> All 3.67 million adults residents in...

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Literature Corpus work
ca61363c-d41b-5d31-8f60-209348381960
DOI
10.1101/2021.11.08.21266087
Open publication

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