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Samuel Alizon1 
, Stéphanie Haim-Boukobza2 , Vincent Foulongne3 , Laura Verdurme2 , Sabine Trombert-Paolantoni2 , Emmanuel Lecorche2 , Bénédicte Roquebert2 , Mircea T. Sofonea
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.
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, Stéphanie Haim-Boukobza2 , Vincent Foulongne3 , Laura Verdurme2 , Sabine Trombert-Paolantoni2 , Emmanuel Lecorche2 , Bénédicte Roquebert2 , Mircea T. SofoneaWe 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.
full article