Design and Implementation of a National Program to Monitor the Prevalence of SARS-CoV-2 IgG Antibodies in England Using Self-Testing: The REACT-2 Study

Helen Ward*, Christina Atchison, Matthew Whitaker, Bethan Davies, Deborah Ashby, Ara Darzi, Marc Chadeau-Hyam, Steven Riley, Christl Donnelly, Wendy Barclay, Graham Cooke, Paul Elliott*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Data System. The UK Department of Health and Social Care funded the REal-time Assessment of Community Transmission-2 (REACT-2) study to estimate community prevalence of SARS-CoV-2 IgG (immunoglobulin G) antibodies in England. Data Collection/Processing. We obtained random cross-sectional samples of adults from the National Health Service (NHS) patient list (near-universal coverage). We sent participants a lateral flow immunoassay (LFIA) self-test, and they reported the result online. Overall, 905 991 tests were performed (28.9% response) over 6 rounds of data collection (June 2020–May 2021). Data Analysis/Dissemination. We produced weighted estimates of LFIA test positivity (validated against neutralizing antibodies), adjusted for test performance, at local, regional, and national levels and by age, sex, and ethnic group and area-level deprivation score. In each round, fieldwork occurred over 2 weeks, with results reported to policymakers the following week. We disseminated results as preprints and peer-reviewed journal publications. Public Health Implications. REACT-2 estimated the scale and variation in antibody prevalence over time.

Original languageEnglish
Pages (from-to)1201-1209
Number of pages9
JournalAmerican Journal of Public Health
Volume113
Issue number11
DOIs
Publication statusPublished - Nov 2023
Externally publishedYes

Bibliographical note

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© 2023 American Public Health Association Inc.. All rights reserved.

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