Sixteen ship passengers are being monitored in Nebraska's quarantine unit.
The total number of confirmed and probable cases of hantavirus of those who were onboard the MV Hondius cruise ship stands at 10, including two people confirmed to have died from the virus and one person who remains suspected to have died from the virus.
Sixteen American passengers arrived on Monday at the University of Nebraska Medical Center. Fifteen of those passengers were being monitored in a quarantine unit and another, who had initially tested positive, was in a biocontainment unit, officials said. Later, that person tested negative and was medically cleared to go to the quarantine unit.
Two other American passengers were flown to Atlanta for "further assessment and care," officials said.
Here's what you need to know about hantavirus including what it is, how it spreads, how it's treated and if there are any prevention methods:
What is hantavirus?
Hantaviruses are a family of viruses that can cause serious illnesses and death, according to the CDC.
How does hantavirus spread?
Hantaviruses may also spread from person to person, but that also is rare and only suspected for one subtype from South America, according to the WHO.
Read more about hantavirus here.
Officials at Radboudumc hospital in the Netherlands say blood tests show that the 12 hospital employees placed in precautionary quarantine were not contagious to others.
The hospital said the chance of actual infection remains "very small," but the employees are continuing a six-week precautionary quarantine.
-ABC News’ Will Gretsky
There are 41 people under monitoring across the U.S. for potential hantavirus infections, the Centers for Disease Control and Prevention's incident manager for hantavirus, Dr. David Fitter, said in a phone call with reporters.
Those 41 people include: 16 people who were repatriated from the cruise ship and are under quarantine at a Nebraska facility; two who were repatriated from the cruise ship and are being monitored at an Atlanta facility; seven people who were former cruise ship passengers who left before the outbreak was declared; and 16 people who were exposed during travel, including on flights, officials said.
No Americans are positive for hantavirus at this time, officials said.
All 16 people in the Nebraska facility are recommended to stay for the entire 42-day period, officials said.
The remaining exposed people who are not at the quarantine facilities are recommended to stay at home, away from others, with an emphasis to avoid travel, officials said. These individuals are in touch with their state and local health departments and the CDC said it is in touch with those departments.
-ABC News’ Youri Benadjaoud
The French government has been tracking 26 people who had close contacts with cruise ship passengers, and all of those people tested negative for hantavirus on Thursday, according to French Health Minister Stephanie Rist.
“As a precautionary measure against a disease whose lethality is estimated at between 30 and 40% and given the long incubation period -- evaluated today at 42 days -- these 26 individuals have all been placed in hospital isolation,” Rist said. “These 26 individuals will continue to be medically monitored and tested three times per week.”
Meanwhile, the one French cruise ship passenger who tested positive for hantavirus remains in intensive care, Rist said.
-ABC News’ Will Gretsky
Three people in Kansas who have been under monitoring by the state's health department for potential hantavirus infection have been transported to a hospital for observation, a department spokesperson told ABC News.
It is not clear why they were transported and if any of the three have shown signs of symptoms.
Kansas’ health department initially announced on Tuesday that these three people -- who were not cruise ship passengers -- were exposed to an infected individual abroad. The department said their exposure was "high risk" and said at the time that they were not showing any signs of illness.
The Centers for Disease Control and Prevention is "aware and monitoring closely," a spokesperson told ABC News.
-ABC News’ Youri Benadjaoud
