Man, 69, is in intensive care in Johannesburg, while expedition guide Martin Anstee, 56, receiving care in Netherlands

• What is hantavirus?

Two Britons who were medically evacuated from the hantavirus-hit cruise ship are improving, global health officials have said.

A British passenger, understood to be a 69-year-old man, was taken to South Africa on 27 April and is receiving care at a private health facility in Sandton, Johannesburg.