Clusters and outbreaks of hepatitis A virus (HAV) genotype IB with four unique but closely related HAV sequences have been reported in six European Union (EU) countries and in the United Kingdom (UK).
For 2018, 11 312 cases of mumps were reported to ECDC by 28 EU/EEA Member States with an overall notification rate of 2.6 cases per 100 000 population.