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Volume 30, Number 9—September 2024
Research Letter

SARS-CoV-2 Dynamics in the Premier League Testing Program, United Kingdom

Adam J. KucharskiComments to Author , Timothy W. Russell, Joel Hellewell, Sebastian Funk, Andrew Steele, W. John Edmunds, and Mark Gillett
Author affiliations: London School of Hygiene & Tropical Medicine, London, UK (A.J. Kucharski, T.W. Russell, S. Funk, W.J. Edmunds); European Bioinformatics Institute at Wellcome Genome Campus, Hinxton, UK (J. Hellewell); Stride Health Group, London (A. Steele); The Football Association Premier League, London (M. Gillett)

Main Article

Figure

Infection dynamics in the English Premier League testing program for SARS-CoV-2, 2020–2022. A) Weekly PCR test positivity. Dots indicate infections; error bars indicate 95% CIs. Colored lines show inferred mean prevalence in the UK ONS Community Infection Survey. Gray shading shows period where the testing protocol was based on a rapid antigen test, with subsequent confirmatory PCR; hence, PCR positivity is not comparable because sampling was nonrandom. B) Distribution of individual Ct values over time since first positive test. Dashed circles indicate estimated reinfections: orange represents Alpha wave, in which 1 person was reinfected, as determined from 3 samples; purple represents Delta wave, in which samples indicate that 3 persons were reinfected. Ct, cycle threshold; ONS, Office for National Statistics.

Figure. Infection dynamics in the English Premier League testing program for SARS-CoV-2, 2020–2022. A) Weekly PCR test positivity. Dots indicate infections; error bars indicate 95% CIs. Colored lines show inferred mean prevalence in the UK ONS Community Infection Survey. Gray shading shows period where the testing protocol was based on a rapid antigen test, with subsequent confirmatory PCR; hence, PCR positivity is not comparable because sampling was nonrandom. B) Distribution of individual Ct values over time since first positive test. Dashed circles indicate estimated reinfections: orange represents Alpha wave, in which 1 person was reinfected, as determined from 3 samples; purple represents Delta wave, in which samples indicate that 3 persons were reinfected. Ct, cycle threshold; ONS, Office for National Statistics.

Main Article

Page created: August 14, 2024
Page updated: August 21, 2024
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