Key Points

• An epidemic situation has taken hold in mainland France and in Nouvelle-Aquitaine, with very high circulation of the bacterium during the first half of 2024;

• A very sharp increase in SOS Médecins calls for pertussis in June 2024 in Nouvelle-Aquitaine, with a slowing trend observed over the past two weeks;

• A significant increase in emergency room visits for suspected pertussis since May 2024 in the region, continuing through June and July 2024;

• The number of reported clusters in Nouvelle-Aquitaine is trending downward;

• Immediate reporting of clusters (two or more cases) within families or communities, and implementation of measures regarding the cases and their contacts.