Overview

• France has reported 185 invasive meningococcal cases in January and February 2025, a significant increase compared to previous years.
• Health officials link the spike to a severe flu season, which may elevate the risk of meningococcal infections.
• Clusters of cases have been identified in Lyon and Rennes, with vaccination campaigns launched to contain further spread.
• Infections can lead to severe outcomes, including death in 10-12% of cases and lasting complications in up to 25% of survivors.
• Vaccination against meningococcal strains B and ACWY is now mandatory for infants and recommended for adolescents and young adults up to age 24.