Staying Healthy While Traveling — Lessons from the MV Hondius Hantavirus Outbreak

On May 2, 2026, the WHO reported a cluster of severe respiratory illness aboard the Dutch-
flagged cruise ship MV Hondius. Seven cases of hantavirus have been identified — two
confirmed and five suspected — resulting in three deaths. WHO noted that human-to-human
transmission cannot be ruled out, though the risk to the general public remains low. Here’s how
to protect yourself — whether you’re at sea or on the go.

🌍 Top 5 Ways to Stay Healthy When Traveling Anywhere

1. Research destination-specific health risks. Before you go, check the CDC and WHO for disease alerts in your destination. Hantavirus is endemic in parts of Argentina and Chile — the kind of detail travelers often overlook. Know what you’re walking into. 
2. Stay current on vaccinations. Ensure all routine vaccinations are up to date, and get destination-specific ones (typhoid, hepatitis A/B, yellow fever). This is especially important when flying internationally before boarding a cruise, where passengers from dozens of countries mix on day one.
3. Practice relentless hand hygiene. Wash hands frequently with soap and water for at least 20 seconds, especially before eating and after using restrooms. Use alcohol-based sanitizer when soap isn’t available. This single habit disrupts transmission of most infectious diseases.
4. Avoid contact with wildlife and rodents. Hantavirus is primarily acquired through contact with the urine, feces, or saliva of infected rodents. Don’t touch wildlife, avoid sleeping in rodent-prone areas, and be cautious on excursions into rural or wilderness environments. 
5. Listen to your body and isolate early. If you feel unwell — fever, fatigue, respiratory symptoms — seek medical attention immediately and limit contact with others. The MV Hondius outbreak was characterized by fever, gastrointestinal symptoms, and rapid progression to pneumonia and respiratory distress. Early intervention saves lives. 

🚢 Top 5 Ways to Stay Healthy Specifically on a Cruise Ship

1. Be transparent at embarkation health screenings. Cruises conduct health questionnaires before boarding. Answer honestly. Because hantavirus symptoms can appear up to eight weeks after exposure, passengers may be incubating a disease without knowing it — so report any recent illness or unusual exposures, especially from pre-cruise travel. 
2. Avoid touching shared surfaces then touching your face. Handrails, elevator buttons, buffet tongs, and door handles are high-contact zones. Use a tissue or sanitizer after touching them and keep hands away from eyes, nose, and mouth.
3. Be cautious at the buffet. Opt for freshly prepared, hot foods. Avoid items that have been sitting out, and never share utensils. Norovirus — the most common cruise ship illness — spreads rapidly through contaminated food surfaces.
4. Ventilate your cabin and maintain personal space. Open vents, avoid crowded enclosed spaces when possible, and consider wearing a mask in high-traffic indoor areas if passengers around you appear unwell.
5. Seek the ship’s medical center at the first sign of illness. Cruise ships have onboard medical staff. Don’t wait. The first suspected case on the MV Hondius was a 70-year-old passenger who developed fever, headache, and diarrhea — and died just five days later. Speed matters enormously. 

🏥 What Cruise Lines Are Doing to Prevent Outbreaks

Modern cruise operators follow strict protocols: mandatory health declaration forms at embarkation, onboard medical teams and isolation facilities, enhanced sanitation of all shared surfaces, and coordination with WHO and the CDC’s Vessel Sanitation Program. Ships must report illness clusters to health authorities and can be inspected at any port. The MV Hondius outbreak triggered an immediate coordinated international response including case isolation, medical evacuation, and contact tracing across multiple countries. The industry continues to refine protocols — but ultimately, your own awareness and vigilance remain the strongest line of defense. 

Stay informed, stay clean, and speak up when something feels off. Safe travels.