France is facing a fourth wave of the COVID-19 virus, due to a resurgence of cases caused by the Delta variant first found in India, the French government's leading scientific adviser says.
Professor Jean-Francois Delfraissy said on Wednesday the rollout of COVID vaccines would help mitigate the effect of this new surge, which many medical experts think could hit the European nation by September or October.
"We will have a fourth wave, but it will be much more moderate than the previous three waves because the level of vaccinations is different compared to before," Professor Delfraissy told France Info radio.
Epidemiologist Arnaud Fontanet, who also advises the French government, told BFM TV on Wednesday that he expected France's COVID-19 infection numbers to rise again in September or October.
French Health Minister Olivier Veran said earlier this week the Delta variant, the rapid global spread of which has led some countries to reimpose travel restrictions, now represented around 20 per cent of France's cases.