Hantavirus cases on cruise ship deemed low risk, health officials reassure public

Recent detection of hantavirus infections on the Dutch cruise vessel MC Hondus has led to heightened media attention. Health authorities reported 11 cases among passengers, nine confirmed and two probable, and have placed all exposed travelers under quarantine or self‑isolation for up to 45 days while monitoring their health.

Epidemiologist Amer Tahirović of the Sarajevo Public Health Institute told the Bosnian public that there is no cause for alarm. The strain identified on the cruise differs from the endemic hantavirus (HGBS, known locally as “mouse fever”) that occasionally appears in Bosnia and Herzegovina, typically resulting in only two to three cases per year and rarely causing serious illness.

Dr. Slavica Maris added that hantavirus transmission requires prolonged close contact with infected rodent excreta, and the specific rodent reservoir for the Andes‑type virus found on the ship does not exist in Europe. Human‑to‑human spread has only been documented in rare circumstances involving extended exposure. No specific antiviral treatment or vaccine exists; care is supportive.

Both the World Health Organization and local health services have implemented contact tracing, quarantine, and clear guidance for anyone who develops symptoms. Officials stress that the situation is under control and that broader community transmission is not expected.