Key Points

• The Île-de-France region, like the rest of the country, was affected by a surge in measles cases at the end of 2017

• In 2018, 268 cases were reported in the region, 10 times the annual average between 2013 and 2016

• The department of Seine-Saint-Denis was particularly affected in 2018, accounting for 29% of reported cases in the Île-de-France region

• Vaccination coverage in the region (85.4% for two doses) is not sufficient to prevent measles outbreaks