The sickness starts with symptoms including a fever and chills and can quickly become life-threatening

The World Health Organization said one case of hantavirus infection has been confirmed, with five more suspected cases under investigation.

Further three people taken ill, including 69-year-old Briton reported to be in intensive care in South Africa

WHO says a total of seven hantavirus cases identified on cruise ship so far

The crew member is understood to be experiencing acute respiratory symptoms