KDHE says the three are not on the cruise ship, are not symptomatic, and the public-health risk remains 'extremely low.' Here's what hantavirus is, how it spreads, and what KC residents actually need to watch for.
What's happening
The Kansas Department of Health and Environment is monitoring three Kansas residents who had high-risk contact with a person who later tested positive for Andes hantavirus, the strain at the center of a multi-country outbreak linked to the cruise ship MV Hondius. None of the three were aboard the ship. According to KDHE's May 12 statement, the exposure occurred internationally, and the three individuals are not currently experiencing symptoms.
KDHE is working in coordination with the Centers for Disease Control and Prevention and the local health department. The agency continues to characterize the risk to the public from Andes hantavirus as extremely low.
Dr. Steven Simpson, a physician with the University of Kansas Health System, told KCUR that the people being observed do not currently have symptoms. Symptoms of Andes hantavirus typically appear between 2 and 42 days after exposure, which is why public-health agencies place close contacts under extended monitoring even when no illness is present.
What is hantavirus?
Hantaviruses are a family of viruses primarily spread by rodents. In the United States, the most common form is Hantavirus Pulmonary Syndrome (HPS), caused by the Sin Nombre virus and carried by the deer mouse. People typically get HPS through contact with rodent urine, droppings, or saliva — most often by inhaling virus particles disturbed during cleaning of sheds, cabins, garages, or other rodent-occupied spaces.
The Andes virus involved in the current outbreak is a different strain. It is the only hantavirus known to spread from person to person, primarily through close, prolonged contact with someone who is symptomatic. This is why public-health agencies treat the Andes situation differently from the routine, rodent-borne hantavirus cases the CDC has tracked in the U.S. for three decades.
Neither the Sin Nombre virus nor Andes virus is currently considered a routine threat to Kansas City residents going about ordinary daily life.
How it spreads
For the rodent-borne hantaviruses found across most of the U.S., transmission typically happens when virus particles become airborne — for example, when someone sweeps a cabin, disturbs a nest, or cleans up droppings in a poorly ventilated space. Direct rodent bites are rare. The CDC notes that the hantaviruses found in the United States are not known to spread between people.
The Andes virus is the exception. Per the World Health Organization and CDC's Health Alert Network advisory HAN-528 (May 8, 2026), Andes virus has documented person-to-person transmission, particularly through close contact with bodily fluids and prolonged exposure in enclosed spaces. KDHE defines a high-risk exposure as 'prolonged close contact or shared living space with a symptomatic individual, or close proximity during travel.'
What's the KC-area risk?
Very low, according to Jackson County Public Health. The Kansas City metro falls outside the regions where rodent-borne hantavirus is most commonly reported — the bulk of U.S. cases historically come from western and southwestern states like New Mexico, Arizona, Colorado, and California.
For the current Andes-strain situation, the KC angle is narrow and specific: three Kansans who had a single high-risk exposure outside the United States are being watched by health officials. They are not the general public, and there is no community spread underway.
When to seek medical care
The CDC's guidance is direct: anyone who suspects a hantavirus exposure — for example, after cleaning a rodent-infested space and then developing flu-like symptoms — should see a physician immediately and mention the potential rodent exposure.
Early symptoms of HPS resemble the flu: fatigue, fever, muscle aches (especially in the thighs, hips, back, and shoulders). After 4 to 10 days, the illness can progress to coughing, shortness of breath, and difficulty breathing as fluid accumulates in the lungs. The CDC reports that approximately 38% of people who develop respiratory symptoms from HPS may die from the disease, which is part of why early medical attention matters.
Jackson County Public Health's communicable disease line is (816) 404-9881.
❓ Frequently asked questions
Q: Are there any confirmed hantavirus cases in Kansas City?
A: As of the most recent KDHE statement on May 12, 2026, there are no confirmed cases of Andes hantavirus in Kansas. Three Kansans had a high-risk exposure and are being monitored — none are currently symptomatic.
Q: Should I cancel outdoor plans or worry about deer mice in my yard?
A: No. For ordinary Kansas City residents, the routine rodent-borne hantavirus risk is the same as it was last month — very low in our region per Jackson County Public Health. The Andes-strain outbreak is travel-linked and unrelated to local rodent populations.
Q: How long is the monitoring period?
A: Hantavirus has a long incubation window. The Andes strain can take between 2 and 42 days to produce symptoms, which is why public-health agencies extend observation well past the point where most other respiratory illnesses would already be apparent.
Q: Is this related to COVID-19 or another respiratory virus?
A: No. Hantavirus is a different family of virus entirely. CDC's HAN-528 advisory does note that early symptoms can look flu- or COVID-like, which is why clinicians treating recent travelers or known contacts are being asked to consider hantavirus in their differential diagnosis.