In 2011, 1,114 cases of hepatitis A were reported (1,007 in mainland France, 107 in the overseas departments). In the overseas departments, 71% of cases were reported by Mayotte. For mainland France, the annual incidence rate of reported cases was 1.6 per 100,000 inhabitants.

The metropolitan departments with the highest incidence rates for 2011—Haute-Marne (10.2), Loir-et-Cher (9.8), Indre (9.0), and Cher (8.3), experienced clusters of cases among populations living in temporary camps for travelers under poor sanitary conditions.
As in previous years, annual incidence rates in 2011 were generally higher among men than among women and among those under 15 than in other age groups.

The two main risk exposures in the 2 to 6 weeks preceding the onset of the disease were the presence of hepatitis A cases in the immediate environment (50%), with 83% of these cases occurring within the family, and a stay outside mainland France (35%). Among the cases who had traveled outside mainland France, nearly half (44%) had visited one of the Maghreb countries.

In 2011, 35% of reported cases were part of a cluster of cases investigated by the Regional Health Agencies