Hepatitis A Outbreaks Prompt Travel Health Alerts in Europe

EU Nations Face Rising Hepatitis A Cases; Vaccination Urged

Several European countries are grappling with hepatitis A outbreaks, prompting health officials to issue warnings for travelers. The clusters involve related strains of the virus, and health authorities are recommending preventive measures to curb further spread.

Outbreak Hotspots and Transmission Concerns

As of June 18, 2025, Hungary, Austria, Slovakia, and Germany have seen a high likelihood of continued hepatitis A transmission. This is within specific populations, according to the European Centre for Disease Prevention and Control (ECDC).

Additionally, cases were also discovered in the Roma communities of Czechia. The country sequenced samples in 2024, and further samples were analyzed in early 2025, with a significant portion identified as the subgenotype IB strain.

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The World Health Organization reports that vaccination is the most effective way to prevent hepatitis A. The CDC recommends that travelers consult with vaccine experts before international travel (WHO 2024).

Recommended Actions and Traveler Advice

The ECDC suggests tailoring outreach to high-risk populations, taking their needs into account. Specific recommendations include pre-exposure vaccination, post-exposure prophylaxis, and targeted vaccination in low-endemicity settings.

The U.S. CDC advises international travelers to consult a vaccine expert at least one month before travel to areas with hepatitis A outbreaks. For example, vaccination is suggested for unvaccinated travelers one year or older going to Hungary.

Travelers must remain vigilant about current health advisories and consult healthcare professionals to protect their health. Vaccination can significantly reduce the risk of infection.