What is the molecular evolution of SARS-CoV-2 viruses circulating in the region? Results of Flash Survey #28

Published on 18 November 2021

Consolidated results of Flash Survey #28 (October 12, 2021)

1,952 samples from 16 regions/territories in mainland France and overseas territories (36.8% of the 5,305 positive cases reported today), of which 1,788 yielded interpretable results.

The following variants of concern were detected among the samples:

In mainland France:
- 99.9% of variants 21A/I/J (Delta, B.1.617.2, AY*, first identified in India) and other non-VOC variants, including <0.1% of 20E (B.1.177) and <0.1% of B.1.640.
In Guadeloupe: Sample sizes too small to produce interpretable results.
In Martinique: 100% Delta variants
In French Guiana: Did not participate in Flash Survey #28
In Réunion: Sample size too small to produce interpretable results; however, Delta accounts for all 5 sequenced samples with an interpretable result.
In Mayotte: Did not participate in Flash Survey #28