Quick answer
Hantavirus prevention focuses on reducing contact with rodents and their excreta. Seal entry points, control food and trash, ventilate closed spaces before cleaning, wear gloves, and avoid dry methods (sweeping, vacuuming) that could raise contaminated dust. There is no licensed vaccine in most countries: early supportive care for symptoms is key.
Prevention checklist
| Area | Action | Source |
|---|---|---|
| Inside the home | Seal gaps and holes larger than ~6 mm where rodents could enter. | CDC |
| Food storage | Store food (including pet food) in sealed, rodent-proof containers. | CDC |
| Trash | Use bins with tight-fitting lids; empty regularly. | CDC |
| Outdoor perimeter | Keep wood, brush and debris piles away from house walls. | CDC |
| Storage rooms | Reduce clutter where rodents could nest (cardboard, old textiles). | CDC |
| Before cleaning | Ventilate the area for at least 30 minutes before entering. | CDC |
| During cleaning | Use gloves and avoid sweeping or vacuuming dry droppings. | CDC |
| After exposure | If symptoms (fever, breathing difficulty) appear, seek medical care promptly. | CDC, WHO |
How hantavirus exposure happens
Most exposures happen when people inhale aerosolised particles from urine, droppings or saliva of infected rodents — especially when disturbing areas with rodent activity: sheds, garages, basements, cabins closed for months. Exposure can also occur via contact with contaminated surfaces and then touching the face, or, very rarely, through bites.
Person-to-person transmission has only been documented for Andes virus in South America and is uncommon, generally limited to very close contacts. Other hantaviruses do not spread between humans.
What to do before cleaning rodent droppings
- Ventilate the area for at least 30 minutes by opening doors and windows.
- Do not enter — and keep children and pets out — while the area airs out.
- Gather gloves, a mask if available, sturdy waste bags and disinfectant.
- Prepare a disinfectant solution according to manufacturer instructions or CDC recommendations.
What not to do
- Do not sweep or vacuum dry droppings, urine or nests.
- Do not handle dead rodents without gloves.
- Do not touch your face during cleaning.
- Do not mix cleaning chemicals on your own — always follow product instructions.
- Do not ignore later symptoms such as fever or breathing difficulty.
Rodent control at home
- Seal all gaps larger than ~6 mm: around pipes, windows, doors and foundations.
- Reduce food and water availability: cover bins, pick up pet bowls, fix dripping taps.
- Reduce clutter: boxes, paper, clothing and textiles attract nesting.
- Consider safe traps before poisons when children or pets are present.
- For larger infestations, contact professional pest-control services.
Cabins, sheds, garages and storage rooms
Long-closed buildings concentrate risk. Before entering, open doors and windows for at least 30 minutes. When returning to the space, follow damp-cleaning steps; check cupboards, drawers and corners where rodents may have nested. If there is heavy activity, avoid the area until a professional assesses it.
Outdoor and camping risk
- Avoid camping next to visible burrows, rotten wood or gnawed materials.
- Sleep on a raised platform or cot, not directly on the ground.
- Store food in sealed containers or hung from a tree.
- Before using shelters or cabins, ventilate them and check for recent activity.
When to seek medical advice
If, after a meaningful rodent exposure, you develop high fever, severe muscle aches, headache, breathing difficulty or nausea, seek medical care and mention the exposure. Early supportive care clearly improves outcomes. This page does not replace professional medical advice.
Hantavirus Prevention — Frequently Asked Questions
How can you prevent hantavirus?
Most hantavirus prevention focuses on reducing contact with rodents and their droppings. Seal entry points in the home, store food in rodent-proof containers, keep storage areas clutter-free, ventilate closed spaces before cleaning, use gloves, and avoid sweeping or vacuuming dry droppings that could aerosolise particles. These steps are based on CDC and WHO guidance.
What should you do if you find rodent droppings?
Do not sweep or vacuum dry droppings. Ventilate the area for at least 30 minutes, wear gloves, and follow official cleaning steps using a damp method to avoid raising dust. CDC has a dedicated cleaning protocol — see our dedicated guide on cleaning rodent droppings safely.
Can you vacuum mouse droppings?
CDC recommends against vacuuming or sweeping dry rodent droppings, urine or nesting materials, because this can release infectious particles into the air. Use a damp cleaning approach with disinfectant, gloves, and adequate ventilation instead.
Can hantavirus spread through the air?
Hantavirus is not transmitted person-to-person through casual contact in most strains. However, infection in humans can happen when contaminated rodent excreta become aerosolised — for example by sweeping. That is why CDC and WHO emphasise damp cleaning and ventilation rather than dry methods.
How do you reduce hantavirus risk at home?
Seal cracks and holes, store food and trash in sealed containers, keep storage rooms tidy, and remove brush, wood and debris piles from near the building. See our dedicated guide on hantavirus risk at home for room-by-room steps.
What are the safest cleaning steps after rodent activity?
Ventilate the area, put on gloves, spray droppings and surfaces with a disinfectant (such as a diluted bleach solution per CDC guidance), let it soak, wipe up with paper towels, then double-bag the waste. Wash hands thoroughly afterwards. Avoid dry sweeping or vacuuming.
Should you see a doctor after possible hantavirus exposure?
If you have had significant exposure to rodent droppings, nests or contaminated environments and develop fever, severe muscle aches, headache or breathing difficulty within the following weeks, contact a healthcare provider. Mention the rodent exposure — early supportive care improves outcomes (CDC, PAHO).
Is hantavirus common in the United States?
Hantavirus Pulmonary Syndrome remains rare in the United States. CDC has tracked confirmed cases for decades, with most exposures linked to rural or peri-domestic settings where the deer mouse and other reservoirs live. See our US prevention page for state-specific context.
How do cabins and sheds increase hantavirus risk?
Cabins, sheds, garages and storage rooms can accumulate rodent activity when unoccupied. Opening these spaces without ventilation and starting to sweep or move stored materials can disturb dried droppings. Always air out before entering and follow CDC cleaning steps.
What animals carry hantavirus in the US?
In the United States, the deer mouse (Peromyscus maniculatus) is the main reservoir for Sin Nombre virus and HPS. Other rodents — cotton rats, rice rats, white-footed mice — can carry related hantaviruses in specific regions. Casual contact with pets is not a known transmission route.
Medical disclaimer: This page is for informational purposes only and does not replace professional medical advice. Recommendations reflect public documents from CDC, WHO, ECDC and PAHO. For significant exposures or symptoms, consult a healthcare professional.