Reproduction number (R) and growth rate: methodology
How the R value and growth rate estimates are produced.
Applies to England
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The Department of Health and Social Care publishes estimates of the reproduction number (R) and growth rate for England and the 7 NHS England regions. This document outlines how these estimates are produced and assured for publication.
This document refers mainly to the production of the R value and growth rate for England and its regions. However, the same process applies to estimates of the R value and growth rates for Scotland and Wales.
The devolved administrations publish estimates of the R value and growth rate for their own nations. Scotland and Wales use UK Health Security Agency (UKHSA) estimates of the R value and growth rate. In Northern Ireland, the R value is produced by the COVID-19 modelling group on behalf of the Department of Health.
Last updated 6 September 2021 + show all updates
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Updated the methodology for R and growth rate estimates.
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Updated to reflect JBC taking on responsibility for R and growth rate estimates.
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First published.