WHO issues update after three die in hantavirus outbreak on cruise ship The World Health Organization is monitoring a hantavirus outbreak on a cruise ship that has left three people dead, while assessing the wider public risk as low. 9 May 2026 Three people have died following a hantavirus outbreak on a cruise ship travelling across the Atlantic, according to the World Health Organization (WHO). WHO issues update after three die in hantavirus outbreak The outbreak occurred aboard the MV Hondius, operated by Oceanwide Expeditions, during a voyage from Argentina to Cape Verde.