MAINTENANCE. While the number of cases of the XE variant seems to be on the increase in England, scientists are not relaxing their efforts to monitor Sars-CoV-2.
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BA.4, BA.5, XD, XF… If the epidemiological situation is relatively stable, the Sars- CoV-2 does not stop evolving, however, and new variants emerge regularly. Without, to date, unduly worrying the scientists who nevertheless keep an eye on them. State of play with Sylvie van Der Werf, virologist in charge of the national reference center for respiratory infection viruses at the Institut Pasteur.
Le Point: What is the situation on the Sars-CoV-2 variant front?
Sylvie van Der Werf: BA.2, a sub-variant of Omicron that appeared this winter, is still ultra-dominant all over the world. In France, in mid-April, it represented more than 99% of the sequences identified during flash sequencing. It does not generate any particular concern. BA.2, like BA.1