"The average person has no reason to worry" about potential hantavirus infection, according to an expert with the World Health Organization (WHO).

"This Andes hantavirus has spread in limited amount from human to human ... This is not COVID, this is not passing someone in a hallway in an airport outside at a stadium and getting infected," Dr. Boris Pavlin, an epidemiologist and the team lead for Field and Humanitarian Epidemiology at the WHO, told ABC News.

He also said the investigation in the hantavirus infection cluster's origin indicates "there's absolutely every reason to believe that this came from rodents" and that it did not originate from the region the ship departed, but elsewhere in northern Argentina and Chile, where the long-tailed rice rat, which is the specific carrier of the Andes hantavirus strain, is common. Pavlin also confirmed that the first hantavirus cases on board the MV Hondius had previously traveled to this region in the north.

Pavlin additionally confirmed that no one on board was currently showing any symptoms but were "just being monitored as a precautionary measure." He also said he understands why people are concerned.

"I know it's a new name for a lot of people, but this is not a new virus. We've known about it for decades and it's not surprising us," Pavlin said.

-ABC News' Maggie Rulli, Dragana Jovanovic and Aicha El Hammar

Passengers onboard the MV Hondius began disembarking in small groups on Sunday morning, heading for the shore in Tenerife, where they were expected to continue on to charter flights back to their home countries.

Spain’s health minister, Monica Garcia, who was at the port in the Canary Islands on Sunday, said the remaining passengers were all thought to be asymptomatic.

"The entire operation is proceeding normally and I said the first to disembark will be the Spanish citizens, and then the flight to the Netherlands will depart," Garcia said prior to the passengers' beginning of their departures from the ship.

Flights were planned for passengers who were headed to Canada, Turkey, France, Great Britain, Ireland and the United States, she said.

"The Netherlands will send two planes: today's plane and another one tomorrow, which we'll call a 'sweeper plane,' to pick up any passengers not picked up by the other countries," she said. "But in principle, well, throughout today and tomorrow, all the planes of all nationalities will be disembarked and taken back to their respective countries."

-ABC News' Rashid Haddou and Maggie Rulli

The MV Hondius arrived early on Sunday off the coast of Tenerife, dropping anchor near the industrial port of Granadilla at about 5:30 a.m. local time.

Evacuations from the ship were expected to began as soon as possible.

The local government in the Canary Islands, the Spanish archipelago off the northwestern African coast, said it would like everyone off the boat and out of the Canary Islands by today.

They also said they want the boat to depart by end of day.

-ABC News’ Magie Rulli, Dragana Jovanovic and Aicha El Hammar Castano

WHO Director Tedros Adhanom Ghebreyesus visited Saturday the port in Tenerife that is slated to receive the cruise ship and assured local residents the risk to the local population is low and that Tenerife is prepared.

The WHO director appeared at a short press briefing alongside Spanish Health Minister Monica Garcia and other Spanish authorities.

The WHO director said the risk to the local population is low because of the nature of the disease and because the Spanish government has made preparations. But he added concern is legitimate because of the trauma of COVID and decided to go to Tenerife to "be on the side of the people."

Following the disembarkation of passengers, it is expected there will be six repatriation flights to elsewhere in the European Union and four non-EU flights.

Spanish passengers are set to be the first to disembark, according to the Spanish health minister, who said the passengers will be flown to Madrid to quarantine at the city’s Gomez-Ulla military hospital.

The minister said no one on board the ship has any symptoms.

-ABC News' Claire Bower

A plane carrying American passengers who were evacuated on Sunday from a hantavirus-hit cruise ship arrived early on Monday in Nebraska.

Officials on Sunday said one of the passengers arriving at Omaha's Eppley Airfield via a Department of State airlift tested positive for the virus.

That passenger and another were on the plane were traveling in the aircraft's biocontainment units "out of an abundance of caution," the Department of Health and Human Services said in a statement.