From January 1, 2008, to September 30, 2019, nearly 30,000 cases of measles were reported in France (including nearly 15,000 cases in 2011 alone).

• After falling sharply in 2012, the number of reported cases remained stable in 2013 and 2014;

• In 2015, the number of cases rose again (364 cases), linked to a major outbreak in Alsace;

• In 2016, lower circulation of the measles virus was noted (79 reported cases), but it intensified in 2017 (523 reported cases), primarily linked to outbreaks in Nouvelle-Aquitaine, Occitanie, and Grand-Est;

• In 2018, viral circulation resumed very actively, with 2,919 reported cases (outbreaks mainly in Nouvelle-Aquitaine, Occitanie, Pays de la Loire, and Brittany);

• During the first 9 months of 2019, the epidemic persisted, with nearly 2,500 reported cases and viral circulation across almost the entire country (92 departments affected), with outbreaks mainly in Nouvelle-Aquitaine, Occitanie, Pays de la Loire, PACA, and Grand Est. This year also saw the resumption of active measles transmission in the Indian Ocean (Réunion and Mayotte).