CDC Issued Level 3 Emergency Response for Hantavirus: What It Means
The CDC has activated its emergency operations center in Atlanta in response to a deadly hantavirus outbreak aboard a cruise ship, and while officials are stressing that this is the lowest level of emergency activation, the situation is being monitored around the clock.
The Centers for Disease Control and Prevention is now operating at a Level 3 response, according to CBS News, following the deaths of three passengers aboard the MV Hondius from hantavirus. The ship is currently headed to the Canary Islands, where approximately 140 remaining passengers will disembark. None of those still aboard have been reported sick.
What a Level 3 Response Means from the CDC
A Level 3 activation is the CDC's lowest tier of emergency response. It involves CDC disease experts leading the activation with their own staff, with possible assistance from some personnel at the Emergency Activation Center. The center operates 24 hours a day, seven days a week at this level.
For context, the CDC has only ever activated a Level 1 response - its highest, requiring maximum staff working around the clock - three times in its history: Hurricane Katrina in 2005, the H1N1 influenza outbreak in 2009, and the Ebola outbreak in 2014. Level 3 is a monitoring and coordination posture, not a declaration of crisis. But it does signal that the agency is taking the situation seriously enough to dedicate resources to it continuously.
If conditions worsen, the CDC could escalate its response level.
How Far the Hantavirus Outbreak Has Spread
The first death aboard the MV Hondius occurred nearly a month before officials confirmed hantavirus in a ship passenger - a timeline that complicated early containment efforts. Since then, at least five U.S. states and 11 other countries have been monitoring people who disembarked the vessel before cases were confirmed, according to the World Health Organization.
In Georgia, two residents who recently returned home are being monitored by the state Department of Public Health. Both are currently in good health and showing no signs of infection. The U.S. State Department said it is in direct contact with American citizens still aboard the ship and will offer them a special evacuation flight home from Tenerife, Spain when the vessel arrives there this weekend.
What Is Hantavirus?
Hantavirus causes two serious syndromes. In the Western Hemisphere, including the United States, the primary concern is hantavirus pulmonary syndrome, or HPS - a severe and potentially deadly disease affecting the lungs. Early symptoms typically appear one to eight weeks after exposure and include fatigue, fever and muscle aches, particularly in the thighs, hips, back and shoulders. About half of patients also experience headaches, dizziness, chills and gastrointestinal symptoms.
The late stage of HPS - which develops four to ten days after initial symptoms - involves coughing, shortness of breath and fluid buildup in the lungs. It can be fatal. According to the CDC, 38% of people who develop respiratory symptoms from HPS may die from the disease.
There is no specific treatment or cure for hantavirus. Early medical attention improves the chances of survival. Anyone who has recently been aboard the MV Hondius and develops symptoms should contact their healthcare provider immediately and inform them of potential exposure.
This story was originally published by Men's Journal on May 9, 2026, where it first appeared in the News section. Add Men's Journal as a Preferred Source by clicking here.
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This story was originally published May 8, 2026 at 11:57 PM.