Key Points

• The epidemic continues in mainland France and Nouvelle-Aquitaine, with a slowing trend observed since September 2024.

• High activity for suspected pertussis was observed in primary care and emergency departments during the summer of 2024, with a downward trend since September; however, activity levels remain high.

• Active circulation of Bordetella pertussis, the bacterium responsible for whooping cough.

• A downward trend in the number of reported clusters of pertussis cases in Nouvelle-Aquitaine.