Key Points

• End of the epidemic cycle in mainland France and Nouvelle-Aquitaine, with a decline in all indicators since September 2024.

• Levels of activity and circulation indicators for Bordetella pertussis, the bacterium responsible for whooping cough, remain higher than those observed in previous years.

• Seven deaths have been reported in the region.

• Decrease in the number of reported clusters of pertussis cases in Nouvelle-Aquitaine.

• Vigilance regarding the disease and the circulation of the bacterium must be maintained in order to identify a potential resurgence of the epidemic in the spring of 2025, as pertussis is more common in the spring and summer, and an epidemic cycle can span more than one year.