Key Points

• Resurgence of measles since November 2017, with an epidemic peak in Week 13

• Decline in the number of new weekly cases since Week 13

• As of May 13, 2018, 2,231 cases reported since November 6, 2017 (+79 cases since the last epidemiological bulletin, Week 18)

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

• 48% of cases (n=1,068) were reported in the Nouvelle-Aquitaine region, the only region experiencing an epidemic

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

• Highest incidence among children under 1 year of age: 22.8 cases per 100,000 inhabitants

• 22% of reported cases were hospitalized

• 87% of measles cases occurred in unvaccinated or inadequately vaccinated individuals