Passengers who were on the cruise ship MV Hondius will quarantine in their home countries.

News of passenger infections on the MV Hondius cruise ship emerged in early May, bringing hantaviruses into the spotlight. Here are the main scientific terms you need to know.

About 12 countries have so far been linked to the hantavirus outbreak on the MV Hondius, as the UN health agency confirms at least five cases.