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If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. This study aimed to describe the outbreak investigation in Seine-Maritime department France and the control measures implemented accordingly. Outbreak description used data from mandatory reporting and enhanced surveillance of male cases.
Confirmed case was genotype IA isolated, possible cases had no reported genotype information. Targeted control measures included communication on sexual practices at risk of hepatitis A transmission and two vaccination campaigns in April and January Characteristics of cases and vaccinees were described. We reported the best communication channel for relaying outbreak information and control measures based on the monitoring of social network activities and feedback from vaccinees.
During the outbreak period December to December , a total of 48 confirmed outbreak cases and 30 possible outbreak cases were notified. Two epidemic waves were observed.
In response to the outbreak, two vaccination campaigns were deployed. A total of MSM were vaccinated, of whom 56 in a truck parked beside the sauna.
