Sustained natural immunity following SARS-CoV-2 infection against severe COVID-19 outcomes and symptomatic reinfection: analyses of national data for Brazil and Scotland

Objectives SARS-CoV-2 infection provides protection against reinfection and severe COVID-19 disease; however, this protective effect may diminish over time. We assessed waning of natural immunity conferred by previous infection against severe disease and symptomatic reinfection in Brazil and Scotlan...

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Main Authors: Aziz Sheikh, Neil Pearce, Mauricio L Barreto, Chris Robertson, Srinivasa Vittal Katikireddi, Syed Ahmar Shah, Kirsten J Hainey, Thiago Cerqueira-Silva, Manoel Barral-Netto, Tristan Millington, Fasih Haider, Vincius de Araujo Oliveira, Viviane Sampaio Boaventura
Format: Article
Language:English
Published: BMJ Publishing Group 2025-07-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/15/7/e104057.full
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