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. 2022 Feb;27(6):2200078.
doi: 10.2807/1560-7917.ES.2022.27.6.2200078.

Investigation of outbreak cases infected with the SARS-CoV-2 B.1.640 variant in a fully vaccinated elderly population, Normandy, France, November to December 2021

Brice Mastrovito  1 , Chloé Naimi  1 , Leslie Kouam  1 , Xavier Naudot  2 , Lucie Fournier  3 , Guillaume Spaccaferri  4 , Jean-Christophe Plantier  5 , Anaïs Soares  2 , Fabienne De Oliveira  5 , Marie Gueudin  5 , Véronique Jacomo  2 , Céline Leroy  6 , Alice Moisan  5 , Mélanie Martel  1
Affiliations

Investigation of outbreak cases infected with the SARS-CoV-2 B.1.640 variant in a fully vaccinated elderly population, Normandy, France, November to December 2021

Brice Mastrovito et al. Euro Surveill. 2022 Feb.

Abstract

Three confirmed infections with the SARS-CoV-2 B.1.640 variant under monitoring were reported in Normandy, north-western France in late November 2021. Investigations led to the identification of two events linked to the same cluster. A total of 75 confirmed and probable B.1.640 cases were reported. All had completed the primary vaccination series. Sixty-two cases were older than 65 years. Fifty-six cases had symptoms and four were hospitalised. This investigation provides preliminary results concerning a variant with limited information currently available.

Keywords: COVID-19; Cluster; Epidemiology; Outbreak investigation; SARS-CoV-2.

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Conflict of interest statement

Conflict of interest: None declared.

Figures

Figure 1
Figure 1
Links between three events related to confirmed and probable cases infected with SARS-CoV-2 B.1.640 variant, Normandy, France, November–December 2021
Figure 2
Figure 2
Distribution of confirmed and probable cases infected with SARS-CoV-2 B.1.640 variant, by date of sample collection, event affiliation and case classification, Normandy, France, November–December 2021 (n = 75)
See this image and copyright information in PMC

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