Three people have died and five others have been taken unwell after a suspected virus outbreak on a cruise ship sailing in the Atlantic Ocean.

One case of hantavirus has been confirmed, while one British national, aged 69, is in intensive care in Johannesburg, South Africa.

The outbreak was reported aboard the MV Hondius cruise ship, which was travelling from Argentina to Cape Verde.

The MarineTraffic global shipping website identified the vessel as a Dutch-flagged passenger cruise ship. It located it as docked in Praia, the capital of Cape Verde, on Sunday night.

South African authorities told the BBC the first person to show virus symptoms was a 70-year-old passenger who died on board. His body is now on the island of Saint Helena, a British territory in the South Atlantic.

His 69-year-old wife also became ill on board and was evacuated to South Africa, where she died in a Johannesburg hospital.

The World Health Organisation said that it was working with authorities to evacuate two other passengers with symptoms from the ship.

Hantavirus infections are typically linked to exposure to the feces or urine of infected rodents, WHO said.

While rare, WHO said they can be spread between people and they can lead to severe respiratory illness. There is no specific treatment or cure, but early medical attention can increase the chance of survival.

In a statement, they said: “WHO is aware of and supporting a public health event involving a cruise vessel sailing in the Atlantic Ocean. To date, one case of hantavirus infection has been laboratory confirmed, and there are five additional suspected cases. Of the six affected individuals, three have died and one is currently in intensive care in South Africa.

“Detailed investigations are ongoing, including further laboratory testing, and epidemiological investigations. Medical care and support are being provided to passengers and crew. Sequencing of the virus is also ongoing.

“Hantavirus infections are typically linked to environmental exposure (exposure to infected rodents’ urine or faeces). While rare, hantavirus may spread between people, and can lead to severe respiratory illness and requires careful patient monitoring, support and response.”

Hantavirus was in the news after the late actor Gene Hackman’s wife, Betsy Arakawa, died from hantavirus infection in New Mexico last year. Hackman died a week later at their home.

The m/v Hondius is run by tour company Oceanwide Expeditions, described as the “first-registered Polar Class 6 vessel in the world, meeting the latest and highest Lloyd’s Register standards for ice-strengthened cruise ships.”

A FCDO spokesperson said: “We are closely monitoring reports of a potential hantavirus outbreak on the cruise ship Hondius and stand ready to support British nationals if needed. We are in touch with the cruise company and local authorities.”

The Independent has contacted Oceanwide Expeditions for comment.