Just a day after the outbreak was announced, cases were confirmed in the capitals of Uganda and the Democratic Republic of Congo. There is no approved vaccine for the strain.

Around 50 people so far have symptoms “consistent with an acute gastrointestinal infection” on the Ambassador Cruise Line ship Ambition.

The British military took critical medical supplies to Tristan da Cunha, a tiny British archipelago where authorities have identified a suspected hantavirus case.

Former passengers on the MV Hondius say that the ship was made for wildlife expeditions and that the crew took safety very seriously.