Travel to southern Argentina, Chile, and parts of Bolivia includes the only documented natural reservoir of Andes virus — the strain involved in the current MV Hondius outbreak.
Avoid contact with rodents and their habitats. Don't sleep in abandoned rural structures. Be alert for fever and respiratory symptoms in the eight weeks after return.
The single best predictor of hantavirus exposure is contact with aerosolised dust from rodent-infested enclosed spaces. Outdoor exposures are far less risky than enclosed-space exposures, but both warrant basic precautions in endemic regions.
1. Ventilate first. Open windows and doors for at least 30 minutes before entering or working in a closed space with possible rodent activity.
2. Wear PPE. N95-class respirator (not a surgical mask), nitrile gloves, eye protection, and disposable coveralls for larger jobs.
3. Wet-disinfect, never dry-sweep. Apply 1:10 bleach solution to droppings and let sit for five minutes before wiping with disposable paper towels.
4. Double-bag waste. Two layers of contractor-grade plastic, sealed, and disposed in regular household trash.
5. Hand hygiene. Wash thoroughly with soap and water after gloves come off. Then a second handwash for good measure.
N95 respirator (NIOSH-certified, properly fit-tested if possible)
Heavy-duty nitrile gloves
Anti-fog safety goggles
EPA-approved disinfectant
Heavy-duty contractor bags (for double-bag disposal)
See the supply hub for current vendor links.
Any fever, severe muscle aches, or new shortness of breath in the eight weeks after a possible exposure should trigger immediate medical evaluation. Mention the specific exposure history — clinicians may not think of hantavirus without that prompt.
→ See the live MV Hondius tracker, full timeline, and 15 hantavirus news sourcesYes. The 2026 MV Hondius cluster is a contained, contact-based event involving Andes virus, which is not present in North American rodent populations. Standard background hantavirus precautions are unchanged.
Yes for cleanup of rodent droppings or enclosed-space work. A surgical mask does not filter aerosolised particles effectively. The CDC's hantavirus cleanup guidance specifies N95 or higher.
Yes — most documented HPS cases trace back to a single intense exposure event (typically a closed-space clean-out). Cumulative low-level outdoor exposure is much lower risk.