Key Points

• The situation in Occitanie is part of a national and European context of a resurgence of pertussis—which was expected but is of high intensity—following very low circulation from 2020 to 2022 (Santé publique France, Epidemiological Bulletin in France of June 28, 2024, ECDC).

• Decrease in the number of emergency room visits for suspected pertussis over the past two weeks. These visits primarily involve children (those under 15 and under 1 year of age account for 43% and 29% of visits, respectively, since the beginning of 2024), with the highest hospitalization rate among those under 1 year of age (73%).

• Decrease in the number of suspected pertussis cases reported by the four SOS Médecins associations in the region (Montpellier, Toulouse, Nîmes, and Perpignan) over the past week.

• In June 2024, the significant increase in the positivity rate of pertussis PCR tests continued, with a sharp decrease in July according to data from three laboratories (Biomnis and Cerba) (incomplete data for July 2024).

• Decrease in reports to the Occitanie Regional Health Agency (ARS) by healthcare professionals of isolated or clustered pertussis cases in July 2024, in nearly all departments.

• Vaccination coverage with the hexavalent vaccine among infants born in 2022 and aged 21 months who received 3 doses of the vaccine was over 91% in Occitanie, close to the national level.