Three people are dead and others remain under surveillance amid an outbreak of hantavirus aboard a cruise ship in Cape Verde, according to the World Health Organization. The incident has renewed attention on a rare but deadly virus that U.S. health officials have tracked for more than three decades.
Hantavirus pulmonary syndrome was first identified in the United States during a 1993 outbreak in the Four Corners region, where Arizona, Colorado, New Mexico, and Utah meet. Since then, federal health authorities have monitored the disease, which spreads primarily through contact with infected rodents or their urine and feces.
What the Left Is Saying
Public health advocates are using the cruise ship outbreak to push for increased funding for vector-borne disease surveillance and research into treatments for rare pathogens. Dr. Sonja Bartolome of UT Southwestern Medical Center in Dallas said early symptoms can mimic the flu, making diagnosis difficult without explicit exposure history.
"Early in the illness, you really may not be able to tell the difference between hantavirus and having the flu," Bartolome said in comments reported by Nexstar. She emphasized that early medical attention can increase survival chances for patients who contract hantavirus pulmonary syndrome.
Progressive health policy groups have called for expanded public education campaigns about rodent control, particularly in rural areas where exposure risk is highest. California health officials specifically recommend using protective gloves and bleach solutions when cleaning rodent droppings to minimize infection risk.
What the Right Is Saying
Conservative commentators and some Republican lawmakers have questioned whether federal agencies are adequately prioritizing resources toward threats with broader pandemic potential rather than rare diseases like hantavirus. The WHO's top epidemic expert, Maria Van Kerkhove, sought to reassure the public that this outbreak is not the start of another global health crisis.
"This is not the next COVID, but it is a serious infectious disease," Van Kerkhove said. "Most people will never be exposed to this."
Some Republican legislators have emphasized personal responsibility in disease prevention, pointing to CDC guidance that avoiding contact with rodents and their droppings remains the most effective prevention strategy. The agency specifically cautions against sweeping or vacuuming areas contaminated by rodent waste, as these methods can aerosolize virus particles.
What the Numbers Show
Through 2023, the most recent data year available, the CDC has confirmed nearly 900 hantavirus cases in the United States. Roughly half of those cases were reported in the Four Corners region and California combined, including more than 120 each in Colorado and New Mexico.
CDC data shows that 10 states have never reported a case of hantavirus. A study published last year found that more than 30 species of rodents and small mammals common in the Southwest carry hantavirus, including rats, mice, ground squirrels, chipmunks, and gophers.
Deer mice most commonly spread hantavirus pulmonary syndrome, according to the CDC. The virus does not typically spread between people, but there have been documented instances of human-to-human transmission. Tests have confirmed that at least five people aboard the MV Hondius cruise ship were infected with the Andes virus, which is the only hantavirus thought capable of spreading person-to-person.
The Bottom Line
The cruise ship outbreak has brought renewed attention to a rare but serious disease that federal health officials have monitored since the 1990s. While cases remain uncommon in the United States, the geographic concentration in certain regions and the high fatality rate of hantavirus pulmonary syndrome make it a persistent public health concern.
Health experts emphasize that avoiding contact with rodents and their droppings remains the primary prevention strategy for most Americans. The WHO has advised that this outbreak does not pose pandemic risk, though investigators continue tracing contacts of those infected aboard the vessel.