Key Points

• Call for heightened vigilance, including reporting (mandatory reporting) as soon as clinical suspicion arises and the implementation of appropriate preventive measures (vaccination and isolation measures).

• Sharp increase in the number of cases in Europe and France.

• Significant risk of importation and the establishment of transmission chains in France.

• The number of cases reported in Nouvelle-Aquitaine during the first quarter of 2025 is equivalent to the total number reported for the entire year of 2024; at this stage, the number remains limited in the region.