The hygiene of cruise lines may be under scrutiny after a suspected outbreak of hantavirus on a polar expedition vessel – but passengers should be reassured that cases are rare. At least three people have died aboard Oceanwide Expeditions’ MV Hondius , which began a remote voyage from Argentina to Cape Verde on 1 April, carrying 147 passengers. The World Health Organisation (WHO) said a total of seven hantavirus cases – two confirmed and five suspected – had been identified on the cruise ship so far. Three individuals will be medically evacuated in Cape Verde, but most passengers are required to remain on board until the ship reaches the Canary Islands: a voyage that is expected to take three days . Oceanwide Expeditions said there is no “definitive disembarkation point” for the remaining guests but sailing on to Las Palmas or Tenerife is being considered, where further medical screening and handling could take place.…