Impact of the Omicron variant on SARS-CoV-2 reinfections in France, March 2021 to February 2022

Publié le 31 mars 2022 Mis à jour le 11 août 2026

Since the first reports in summer 2020, SARS-CoV-2 reinfections have raised concerns about the immunogenicity of the virus, which will affect SARS-CoV-2 epidemiology and possibly the burden of COVID-19 on our societies in the future. This study provides data on the frequency and characteristics of possible reinfections, using the French national COVID-19 testing database. The Omicron variant had a large impact on the frequency of possible reinfections in France, which represented 3.8% of all confirmed COVID-19 cases since December 2021.

Auteur(s) : Bastard Jonathan, Taisne Benjamin, Figoni Julie, Mailles Alexandra, Durand Julien, Fayad Myriam, Josset Laurence, Maisa Anna, van der Werf Sylvie, Parent du Châtelet Isabelle, Bernard-Stoecklin Sibylle, PARENT Isabelle, MAISA Anna, FIGONI Julie, BERNARD-STOECKLIN Sibylle

Année de publication : 2022

Pages : 2-8

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