Impact of the Omicron variant on SARS-CoV-2 reinfections in France, March 2021 to February 2022
Jonathan Bastard, Benjamin Taisne, Julie Figoni, Alexandra Mailles, Julien Durand, Myriam Fayad, Laurence Josset, Anna Maisa, Sylvie van der Werf, Isabelle Parent du Châtelet, Sibylle Bernard-Stoecklin
Abstract
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.
Topics & Concepts
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)Coronavirus disease 2019 (COVID-19)2019-20 coronavirus outbreakEpidemiologyImmunogenicityVirologyMedicinePediatricsOutbreakImmunologyInternal medicineDiseaseImmune systemInfectious disease (medical specialty)SARS-CoV-2 and COVID-19 ResearchSARS-CoV-2 detection and testingCOVID-19 diagnosis using AI