Fig. 1: SARS-CoV-2 infections and vaccination over time in the study population in California state prisons.
From: Infectiousness of SARS-CoV-2 breakthrough infections and reinfections during the Omicron wave
We obtained data on SARS-CoV-2 infections, vaccination and contact history for residents incarcerated in the California state prison system from 1 March 2020 to 20 May 2022. a, Number of SARS-CoV-2 infections over time in the California state prison system. b, Number of COVID-19 index cases included in the analysis over time, stratified by history of prior natural infection and vaccination. c, Number of COVID-19 index cases by institution during the Omicron wave (15 December 2021 to 20 May 2022) included in the analysis. d, COVID-19 vaccine coverage over time for residents in the California state prison system by primary series and booster dose. The shaded region in a and d corresponds with the Omicron variant wave.
