Key Points

• Since January 1, 2026, 116 cases of measles have been reported, including 2 new cases in October.
• Of these cases, 43 (37%) were hospitalized (including 2 in the intensive care unit), and 17 cases (15%) developed complications, including 8 cases of pneumonia. No deaths have been reported.
• The median age of cases is 20 years. The three most affected age groups are children aged 1–4 years (16%), adults aged 40 and older (16%), and adults aged 20–24 years (14%).
• Among the individuals targeted for vaccination (aged over 1 year and born since 1980), for whom vaccination status was known (n=79), 43 (54%) were not up to date on their vaccinations, while 35 (44%) had received two doses.
• In France, 34 departments (34%) reported at least one case during the period. The five departments with the highest number of reported cases are: Yvelines (9%), Hauts-de-Seine (9%), Moselle (8%), Haute-Savoie (8%), and Paris (7%). No cases were reported in the overseas departments and regions.
• During the period, 16 clusters of cases (groups of epidemiologically linked cases) were reported to the Regional Health Agencies (ARS) (provisional, unconsolidated data), totaling 70 cases. Of these, 6 clusters involved 5 or more cases. No clusters are currently active.