Two British nationals are self-isolating at home in the UK after possible exposure to hantavirus on the MV Hondius. According to the UK Health Protection Agency, the couple traveled on a cruise ship that departed from Argentina last month, but left the ship earlier in the journey and currently have no symptoms.The two Britons landed in St. Helena between April 22 and 24 before flying back to Britain via Johannesburg, officials said. They later contacted health officials after learning about the ship-linked infection, the BBC reportsCruise operator, about 150 people on board the ship under strict precautionary measures Oceanwide Campaigns said. The company had earlier confirmed that the 19 passengers and four crew members on board the plane were British citizens.Three passengers were medically evacuated by ship to the Netherlands on Wednesday for treatment. The evacuated people were British, Dutch and German nationals, two of whom were reported to be in critical condition and one in stable condition.Multiple media outlets identified the British passenger as Martin Anstey, a 56-year-old former police officer.Professor Robin May, chief scientific adviser to the UKHSA, told BBC Breakfast that the British man was being treated in the Netherlands and was “doing well”.May said, “He will be examined for some time. I am very pleased that he is now in the hospital and receiving the treatment he needs.”Anstey’s wife Nicola told The Daily Telegraph that the last few days had been difficult for the family.“He is relieved after coming off the plane. It was quite mild at first, then it got a little more serious and now he is stable again,” he said.“The fear with this virus is that it could get worse very quickly so it’s been a bit up-and-down for him. “I don’t believe he is in imminent danger now but it was terrifying.”Spanish authorities have given permission for the ship to dock in the Canary Islands despite concerns raised by some local officials.UKHSA said British passengers who do not show symptoms are expected to return to the UK on a charter flight departing from the Canary Islands.Health officials said travelers may need to isolate or quarantine for up to six weeks, depending on the length of possible exposure to the virus.The UK Health Protection Agency (UKHSA) is the UK government body responsible for protecting public health and monitoring infectious diseases, including outbreaks and health emergencies.