Fig. 3From: Characteristics of infections with ancestral, Beta and Delta variants of SARS-CoV-2 in the PHIRST-C community cohort study, South Africa, 2020-2021Ratesa of SARS-CoV-2 infections per 100 person years by SARS-CoV-2 variant and site, at a rural and an urban site, South Africa, 2020-2021. a Incidence rate estimated as number of episodes divided by the person time under observationBack to article page