Influence of vaccination and prior immunity on the dynamics of Omicron BA.1 and BA.2 sub-variants - Université Toulouse III - Paul Sabatier - Toulouse INP Accéder directement au contenu
Article Dans Une Revue Journal of Infection Année : 2022

Influence of vaccination and prior immunity on the dynamics of Omicron BA.1 and BA.2 sub-variants

Résumé

The B.1.1.529 SARS-CoV-2 lineage, named Omicron, was recently divided into three lineages (BA.1, BA.2 and BA.3). BA.1 and BA.2 are much more dominant than BA.3. BA.1 could cause breakthrough infections in highly immune populations [1]. Preliminary studies indicate that BA.2 can readily overcome the immunity provided by vaccination and/or infection with an earlier variant. We used data for the French city of Toulouse to evaluate the impact of the proportions of the BA.1 and BA.2 variants in positive-testing samples and the impact of vaccination on SARS-CoV-2 proliferation.

Dates et versions

hal-04009379 , version 1 (01-03-2023)

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Citer

Chloé Dimeglio, Jean-Michel Loubes, Marion Migueres, Karine Sauné, Pauline Trémeaux, et al.. Influence of vaccination and prior immunity on the dynamics of Omicron BA.1 and BA.2 sub-variants. Journal of Infection, 2022, 84 (6), pp.834-872. ⟨10.1016/j.jinf.2022.03.014⟩. ⟨hal-04009379⟩
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