Key Points

• Measles resurgence since November 2017

• Decline in the number of new weekly cases since Week 13 (epidemic peak)

• As of May 27, 2018, 2,364 cases reported since November 6, 2017 (+80 cases since the last epidemiological bulletin, S20)

• 83 departments have reported at least 1 case, a number that has remained stable since the last bulletin

• Since Week 13, the weekly number of cases has also decreased significantly in the Nouvelle-Aquitaine region, which no longer reports any active outbreaks

• 1 case imported from mainland France to French Guiana, with no secondary cases identified

• Highest incidence among children under 1 year of age: 23.8 cases per 100,000 inhabitants

• 22% of reported cases were hospitalized

• 88% of measles cases occurred in unvaccinated or inadequately vaccinated individuals