The hygiene of cruise lines may be under scrutiny after the 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 11 hantavirus cases had been identified from the cruise ship so far and nine were confirmed as the Andes strain. Three individuals were medically evacuated in Cape Verde on 6 May and there was a mass repatriation from Tenerife earlier this week. This included 20 British passengers who arrived at an isolation facility after their repatriation flight landed in the UK on Sunday. Oceanwide Expeditions said 27 individuals remain on board, 25 crew and two medical staff. None are displaying symptoms associated with hantavirus . The vessel is expected to arrive in Rotterdam on either Sunday 17 or Monday, 18 May.…