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Volume 29, Number 1—January 2023
Dispatch

Early Warning Surveillance for SARS-CoV-2 Omicron Variants, United Kingdom, November 2021–September 2022

Sarah Foulkes1, Edward J.M. Monk1, Dominic Sparkes, Nipunadi Hettiarachchi, Iain D. Milligan, Katie Munro, Andrew Taylor-Kerr, Naomi Platt, Anna Howells, Jerry Ye Aung Kyaw, Enemona Adaji, Eileen Gallagher, Jameel Khawam, Edgar Wellington, Lesley Price, David Crossman, Chris Norman, Elen de Lacy, Lisa Cromey, Diane Corrigan, Angie Lackenby, Paola Barbero, Busayo Elegunde, Maria Zambon, Meera A. Chand, Colin S. Brown, Jasmin Islam, Ana Atti, Susan Hopkins, Victoria J. Hall2, Michelle J. Cole2Comments to Author , and the SIREN Study Group3
Author affiliations: UK Health Security Agency, London, UK (S. Foulkes, E.J.M. Monk, D. Sparkes, N. Hettiarachchi, I.D. Milligan, K. Munro, A. Taylor-Kerr, N. Platt, A. Howells, J. Ye Aung Kyaw, E. Adaji, E. Gallagher, J. Khawam, E. Wellington, A. Lackenby, P. Barbero, B. Elegunde, M. Zambon, M.A. Chand, C.S. Brown, J. Islam, A. Atti, S. Hopkins, V. Hall, M.J. Cole); Royal Free London NHS Foundation Trust, London (I.D. Milligan); Glasgow Caledonian University, Glasgow, Scotland, UK (L. Price); Public Health Scotland Glasgow Office, Glasgow (L. Price); University of St. Andrews, St. Andrews, Scotland, UK (D. Crossman); Health and Care Research Wales, Cardiff, Wales, UK (C. Norman); Public Health Wales, Cardiff (E. de Lacy); Public Health Agency Northern Ireland, Belfast, Northern Ireland, UK (L. Cromey, D. Corrigan); Guy’s and St. Thomas’ NHS Foundation Trust, London (M.A. Chand); Royal Free Hospital, London (C.S. Brown); National Institute for Health Research Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, London (S. Hopkins, V.J. Hall)

Main Article

Figure 1

Rate of SARS-CoV-2 infections and reinfections detected through SIREN early warning system, United Kingdom, June 2020–September 2022. The SIREN study tested healthcare workers every 2 weeks via PCR and sequenced PCR-positive samples. We considered primary infection as infections among participants without prior infection and reinfections as infections among persons with prior infection. SIREN, SARS-CoV-2 Immunity and Reinfection.

Figure 1. Rate of SARS-CoV-2 infections and reinfections detected through SIREN early warning system, United Kingdom, June 2020–September 2022. The SIREN study tested healthcare workers every 2 weeks via PCR and sequenced PCR-positive samples. We considered primary infection as infections among participants without prior infection and reinfections as infections among persons with prior infection. SIREN, SARS-CoV-2 Immunity and Reinfection.

Main Article

1These first authors contributed equally to this article.

2These authors contributed equally to this article.

3Additional SIREN Study Group members are listed at the end of this article.

Page created: November 18, 2022
Page updated: December 22, 2022
Page reviewed: December 22, 2022
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