Key Points

• Bronchiolitis surveillance indicators for children under 2 years of age showed a trend toward stabilization in week 03/2023, following the peak in week 48/2022 and several weeks of sharp decline.

• Decline in the bronchiolitis epidemic in most regions.

• End of the epidemic in Brittany and French Guiana.

• Transition to the post-epidemic phase in Corsica, Guadeloupe, Martinique, and the Pays-de-la-Loire region.

• The epidemic continues in Bourgogne-Franche-Comté, Nouvelle-Aquitaine, Provence-Alpes-Côte d’Azur, and Mayotte.