Figure 1.
Distribution of the first and second episode of infection for possible cases of SARS-CoV-2 reinfection, and proportion of possible reinfections among all confirmed COVID-19 cases, by week of sampling, France, January 2021–February 2022 (n = 584,129)
COVID-19: coronavirus disease; SARS-CoV-2: severe acute respiratory syndrome coronavirus 2.
Panels A and B: Because of the study period, we could only detect possible reinfections with a first episode of SARS-CoV-2 infection between weeks 53/2020 and 51/2021 and with a second episode from week 9/2021 onwards. Panel C: The vertical dashed line represents the time point where the Omicron variant exceeded 1% of all positive SARS-CoV-2 tests in France, between week 48 and 49 of 2021.
