Inside the cruise ship at the center of a rare hantavirus outbreak

The company that operates the vessel — currently anchored in the Atlantic off Cape Verde — said it plans to move to Spain's Canary Islands once three people have been medically evacuated and put on specially equipped planes to the Netherlands. Earlier Tuesday, Spanish officials said that they were monitoring the situation and hadn't made a decision.

The MV Hondius, a Dutch ship on a weekslong polar cruise, departed April 1 from Argentina for Antarctica and several isolated islands in the South Atlantic.

"Our days have been close to normal, just waiting for authorities to find a solution," passenger Qasem Elhato, 31 — who sent AP the video footage — said via WhatsApp. "But morale on the ship is high and we're keeping ourselves busy with reading, watching movies, having hot drinks and that kind of things."

Helene Goessaert, another passenger, told Belgian broadcaster VRT that everyone on board is "in the same boat, literally."

"You don't embark on a trip with the idea that one of your fellow passengers won't make it," she said.

"We receive information at regular intervals. It is accurate. For the rest, it is a waiting game," she added. "Today we received fresh fruit and fresh vegetables. That was very important to us."

Evacuation plans are still unclear

Authorities in Cape Verde have said they sent teams of doctors, surgeons, nurses and laboratory specialists to the Hondius. They were seen in Elhato's video footage — wearing white overalls, boots and face masks as they disembarked to a smaller vessel.

Officials in Cape Verde's capital of Praia, a city of less than 200,000 people, said they have stepped up safety protocols, particularly near the port, as a precautionary measure against the rodent-borne illness — which doesn't usually spread person to person, though health authorities say it might be possible.

Elhato said passengers were wearing masks and social distancing — practices that became hallmarks of the COVID-19 pandemic. Ship operator Oceanwide Expeditions said it had implemented its highest level of response, with isolation measures, hygiene protocols and medical monitoring.

Oceanwide Expeditions said Tuesday evening that two specialized aircraft were flying to Cape Verde to evacuate two people who need urgent medical care and one person who was traveling with a German woman who died on board Saturday. They were to be taken to the Netherlands, though exactly when that would happen was not immediately clear.

Once the medical evacuation happens, the ship plans to sail to the Canary Islands, either Gran Canaria or Tenerife, a voyage of some three days, the company said in its statement, adding that "discussions are ongoing with relevant authorities."

Spanish health officials had said in an earlier statement that they were monitoring and that "the most appropriate port of call will be decided. Until then, the Ministry of Health will not adopt any decision, as we have informed the World Health Organization."

WHO notes seven cases in all in its latest update

WHO said Tuesday that it's looking at seven cases in all — three people who have died, one critically ill passenger who was previously taken off the ship, and three on board reporting mild symptoms.

Two of the cases — a woman who died and the evacuated man — tested positive for hantavirus.

A Dutch man was the first death, on April 11. His body was taken off the vessel nearly two weeks later, on the British territory of St. Helena, some 1,200 miles (1,900 kilometers) off the African coast, according to South Africa's Department of Health.

His wife traveled by plane from St. Helena to South Africa; she collapsed at a Johannesburg airport and died at a hospital on April 26, according to WHO and the South African Department of Health.

The ship sailed on to Ascension Island, an isolated Atlantic outpost about 800 miles (1,300 kilometers) to the north, where a sick British man was taken off the ship and evacuated first to Ascension Island and then to South Africa by plane. He is in intensive care in a South African hospital, according to WHO.

Dr. Maria Van Kerkhove, WHO's director of epidemic and pandemic preparedness, said the organization is investigating possible human-to-human transmission on the ship, and that officials suspect the first infected person likely contracted the virus before boarding. She said officials have been told there are no rats on board.

Officials in Argentina — where hantavirus led to 28 deaths nationwide last year, according to the health ministry — said they confirmed no passengers had symptoms when the Hondius departed. Symptoms can appear up to eight weeks after exposure, officials have said.

In South Africa, authorities said they have started contact tracing — another practice used extensively in the coronavirus pandemic. But officials have emphasized that the chance of a major public health threat is low.