Fig. 5: Maps of estimated prevalence and effective reproduction number.
From: Improving local prevalence estimates of SARS-CoV-2 infections using a causal debiasing framework

a, Fortnightly maps of estimated local prevalence in England from 13 September 2020 to 20 June 2021. b, Fortnightly maps of estimated local Rt in England from 13 September 2020 to 20 June 2021.