The crew member is understood to be experiencing acute respiratory symptoms

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

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

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

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