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Full List Of States Affected By Hantavirus As It Arrives In The US
The hantavirus has arrived in the US, and here’s the full list of states affected.
Fears surrounding the deadly hantavirus outbreak linked to the MV Hondius cruise ship are continuing to grow after multiple American passengers returned home while potentially exposed to the rare disease.
Health officials insist the risk to the wider public remains low, but the situation has placed authorities across several states on high alert as passengers are monitored for symptoms.
The outbreak aboard the Dutch expedition vessel has already killed three people and sickened several others during the ship’s voyage across the South Atlantic.
The World Health Organization later confirmed that the strain involved is believed to be the Andes virus — a rare form of hantavirus capable of human-to-human transmission.
That distinction has made the situation especially alarming.
Unlike most hantavirus infections, which spread through contact with infected rodent droppings or urine, the Andes strain has historically shown limited person-to-person transmission through prolonged close contact.
Experts continue to stress that the virus is nowhere near as contagious as COVID-19, but the unusual nature of the outbreak has triggered international monitoring efforts.
Now, with passengers returning to the United States from the quarantined cruise ship, questions are growing about which states are affected and how serious the risk could become.
Cruise ship outbreak sparks international concern
The MV Hondius outbreak first gained worldwide attention after passengers aboard the luxury expedition cruise began falling ill during the vessel’s 35-day journey.
The ship, operated by Oceanwide Expeditions, had traveled from Argentina toward Africa when several passengers reportedly developed respiratory symptoms.
According to the WHO, at least seven people onboard were infected or suspected to be infected during the outbreak. Three passengers later died.
One of the victims was reportedly a 70-year-old Dutch passenger who became ill while aboard the ship. His wife later died after being evacuated to South Africa. Several other passengers required emergency medical treatment and were flown to hospitals in Europe.
The outbreak forced the vessel to remain stranded off Cape Verde before eventually heading toward the Canary Islands, where roughly 90 remaining passengers were later evacuated under strict medical supervision.
Authorities worldwide have since scrambled to track passengers who left the ship before the outbreak was publicly identified. That includes several Americans who returned home without initially realizing they may have been exposed to the virus.
US passengers are now being monitored
At least seven Americans who had been aboard the cruise ship have already returned to the United States and are being monitored by state health officials.
Passengers connected to the outbreak have returned to Arizona, California, Georgia, Texas, and Virginia after disembarking from the vessel during a stop on the remote island of Saint Helena on April 24.
Two Georgia residents are reportedly in good health and following CDC guidance, while two Texans agreed to monitor their temperatures daily for signs of illness. Officials in Arizona and Virginia also said the individuals there were not currently showing symptoms.
California health authorities described the overall risk to the public as low.
Additional American passengers evacuated later from Spain are also being transported to the University of Nebraska Medical Center, home to the nation’s federally funded quarantine unit for high-consequence infectious diseases.
Seventeen Americans from the ship are expected to undergo medical evaluations there before either returning home or remaining under observation.
CDC officials have repeatedly emphasized that the virus spreads only through very close contact with symptomatic individuals.
“This is not COVID,” acting CDC director Jay Bhattacharya said during interviews over the weekend, per the BBC. “We don’t want to cause a public panic over this.”
Still, the outbreak has revived fears surrounding hantavirus in America, especially because the disease already exists naturally in parts of the US.
Why hantavirus is so dangerous
Hantavirus remains rare, but it can be extremely deadly.
The disease is typically spread through contact with infected rodents, particularly deer mice, or exposure to contaminated droppings and urine. Early symptoms often resemble the flu and can include fever, fatigue, muscle aches, headaches, nausea, and chills.
In severe cases, patients can rapidly develop hantavirus pulmonary syndrome, a potentially fatal respiratory illness that fills the lungs with fluid and makes breathing increasingly difficult.
Despite growing headlines surrounding the outbreak, health authorities continue to stress that the overall risk of widespread transmission remains extremely low.
Unlike COVID-19 or influenza, hantavirus does not spread easily between people. Experts say transmission generally requires prolonged close contact with an infected symptomatic individual. Public health officials have repeatedly emphasized that casual contact is not believed to pose a major threat.
Passengers returning from the ship are being asked to self-monitor for symptoms and, in some cases, isolate for up to 42 days as a precaution. Officials are also continuing to trace people who may have had close interactions with infected passengers before the outbreak became publicly known.
For now, authorities say the focus remains on containment and monitoring rather than panic. But with infected passengers already returning to multiple U.S. states, the outbreak has become one of the most closely watched public health scares of the year.
Which states are affected by hantavirus?
The CDC has tracked nearly 900 confirmed cases in the United States since monitoring began following a major outbreak in the Four Corners region in 1993.
Roughly half of those infections occurred in the Southwest and California, where hantavirus cases have historically been most concentrated, per the New York Post.
States with some of the highest historical case counts include California, Colorado, New Mexico, Arizona, Utah, Nevada, Montana, Washington, Oregon, and Idaho.
Researchers have spent years trying to determine why the virus appears far more common in those regions, with some experts pointing to differences in rodent populations and viral strains.
Meanwhile, CDC data shows that Alaska, Hawaii, Missouri, Mississippi, Alabama, Georgia, South Carolina, Kentucky, Ohio, and New Jersey had not recorded confirmed hantavirus cases between 1993 and 2023.
Ironically, Georgia is now among the states monitoring passengers linked to the cruise outbreak despite previously reporting no cases.
There is currently no specific cure for hantavirus, although early treatment can improve survival odds significantly.
The Andes strain connected to the cruise outbreak carries an estimated mortality rate of around 40%, making it one of the deadliest known forms of the virus.
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