Rapid spread of the SARS-CoV-2 Delta variant in some French regions, June 2021
Samuel Alizon, Stéphanie Haïm‐Boukobza, Vincent Foulongne, Laura Verdurme, Sabine Trombert‐Paolantoni, Emmanuel Lecorché, Bénédicte Roquebert, Mircea T. Sofonea
Abstract
We analysed 9,030 variant-specific RT-PCR tests performed on SARS-CoV-2-positive samples collected in France between 31 May and 21 June 2021. This analysis revealed rapid growth of the Delta variant in three of the 13 metropolitan French regions and estimated a +79% (95% confidence interval: 52-110%) transmission advantage compared with the Alpha variant. The next weeks will prove decisive and the magnitude of the estimated transmission advantages of the Delta variant could represent a major challenge for public health authorities.
Topics & Concepts
Confidence intervalSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)Transmission (telecommunications)Coronavirus disease 2019 (COVID-19)Metropolitan area2019-20 coronavirus outbreakDemographyDeltaGeographyBiologyTransmission rateVirologyGenealogyVeterinary medicineMedicineHistoryInternal medicineDiseaseComputer scienceTelecommunicationsInfectious disease (medical specialty)OutbreakPhysicsArchaeologySociologyAstronomySARS-CoV-2 and COVID-19 ResearchSARS-CoV-2 detection and testingViral gastroenteritis research and epidemiology