Acknowledgements
WEST
We would like to thank Professor Robert West for ­suggesting the Bayesian analyses and for his other valuable comments on the manuscript. This work was supported by funding from the PROTECT COVID-19 National Core Study on ­transmission and environment, managed by the Health and Safety Executive on behalf of HM Government and supported by the NIHR Manchester Biomedical Research Centre and the NIHR Greater Manchester Safety Translational Research Centre. The views expressed in this publication are those of the authors and not necessarily those of NIHR. The contents of this publication reflect the views of the authors and not necessarily those of the Health and Safety Executive or the Health and Safety Executive policy makers.