As well as the confirmed cases, there are also two suspected cases, including a British man who is on the remote Atlantic island of Tristan da Cunha. He is currently in a stable condition and in isolation.
A team of six British Army paratroopers and two medical clinicians have parachuted onto the island to help its two-person medical team provide care to the man and the island’s other residents.
It is the first time the UK military has parachuted in medical personnel to provide humanitarian support, according to the MoD.
Meanwhile two Britons are voluntarily self-isolating at home in the UK, having disembarked the vessel at St Helena on 24 April alongside dozens of other passengers before the first case of hantavirus was confirmed.
HV Hondius began its journey on 1 April in Ushuaia, Argentina, with about 150 passengers and crew from 28 countries reported to have initially been aboard.
Many of those still aboard the ship disembarked on Sunday for repatriation to their home countries.
However, some 30 crew members and a nurse from the Netherlands, as well as the body of a passenger who died on board, have remained on the ship. It will sail to Rotterdam in the Netherlands where it will undergo disinfection, the WHO said.
With additional reporting by Dominic Hughes
