Key Points

• Continuous circulation of SARS-CoV-2 between March 2020 and February 2023, causing waves of the epidemic of varying magnitude.

• No distinct seasonal pattern has been observed to date, with resurgences linked to various factors (emergence of a variant, return to school, large gatherings, etc.).

• A sharp increase in surveillance indicators in late 2021 linked to the emergence of the Omicron variant, followed by the circulation of sublineages of this variant with similar characteristics (increased transmissibility, immune evasion capacity, but lower severity).

• Epidemiological indicator trends similar to those observed at the national level, but with a lesser impact on hospital admissions compared to other regions.