Can Dogs Get Hantavirus?

Hantavirus became a household name for many Americans after high-profile cases — including the 2025 death of Betsy Arakawa in New Mexico — brought renewed attention to a disease most people had never thought much about. If you share your home or outdoor life with a dog, here is the honest picture based on CDC guidance and current public health data.

• 1
  Can dogs get hantavirus from mice? No — dogs do not get infected and show no symptoms even after direct contact with infected rodents · They are not natural hosts for the virus · Scientific studies find no evidence of dogs becoming clinically ill

  Unlike humans, dogs lack the biological conditions that allow hantavirus to replicate inside their bodies. Veterinary researchers and the CDC both confirm that dogs are not natural hosts for any of the hantavirus strains circulating in the United States. Even dogs that regularly hunt mice, dig up rodent nests, or live in barn environments with heavy rodent activity do not develop hantavirus disease. This has been consistent in both controlled research and field observations. Your concern after a mouse encounter should not be about your dog’s health — it should be about what your dog may have brought into contact with you.
• 2
  Can dogs spread hantavirus to people? Not directly — but they can raise your risk indirectly by bringing infected rodents or contaminated material into your living space

  Dogs are what researchers call “mechanical vectors” of hantavirus — not biological carriers. This means the virus does not replicate in a dog’s body or travel through a dog’s saliva, urine, or breath. But a dog that catches a mouse can carry virus-laden rodent material on its fur, paws, or mouth. If your dog drags a dead mouse inside, drops it on the floor, or shakes rodent-contaminated fur near your face, you could inhale disturbed particles from that material. The most practical risk is a dog that catches mice outdoors and brings them through a pet door, or a dog that has been digging in an area where deer mice have nested. The dog is fine. The material is the problem.
• 3
  Can dogs get hantavirus pulmonary syndrome (HPS)? No — HPS is a human disease · Dogs do not develop lung complications, respiratory distress, or any symptoms from hantavirus exposure · There are zero confirmed cases of HPS in dogs anywhere in the United States

  Hantavirus Pulmonary Syndrome is the severe, sometimes fatal form of hantavirus disease that affects people. Fluid accumulates in the lungs, breathing becomes increasingly difficult, and without intensive hospital care, the condition can be fatal in approximately 38% of human cases according to the CDC. None of this biological process occurs in dogs. The virus does not trigger an immune cascade in canine lung tissue the way it does in humans. This is not a matter of dogs being tough — it is a matter of cellular biology. The same reason dogs do not get certain human flu strains is why they do not get HPS: the virus cannot find the cell receptors in dogs that it needs to cause disease.
• 4
  What rodents actually carry hantavirus in the United States? The deer mouse is the primary carrier · Also: white-footed mouse, cotton rat, and rice rat · About 15% of deer mice in the US are estimated to carry the virus · Found in all 48 continental states — not just rural areas

  In North America, the deer mouse (Peromyscus maniculatus) is responsible for the vast majority of human hantavirus cases. The Sin Nombre virus, which causes most US cases of HPS, lives naturally in deer mice — the mice never get sick from it, they simply carry it and shed it in their urine, droppings, and saliva throughout their lives. The white-footed mouse spreads the New York virus strain, the cotton rat carries the Black Creek Canal virus in the Southeast, and the rice rat hosts the Bayou virus. Roughly one in seven deer mice in North America carries an active hantavirus infection — though you cannot tell simply by looking at one. University of New Mexico researchers have also identified the virus in over 30 additional small mammal species including chipmunks and ground squirrels, suggesting the carrier pool is broader than once thought.
• 5
  How rare is hantavirus in the United States? Very rare — typically fewer than 50 confirmed cases per year nationally · 864 total US cases reported from 1993–2022 · 94% of cases occur west of the Mississippi River · Fatality rate is approximately 35–38% once respiratory symptoms develop

  Hantavirus is one of those diseases that is genuinely rare in terms of raw numbers but commands respect because of its severity once it takes hold. Between 1993 and 2022, the CDC recorded 864 confirmed cases across the entire United States — an average of roughly 29 per year over that period. The Four Corners region (New Mexico, Colorado, Arizona, Utah) accounts for a disproportionate share of cases. New Mexico has had the most total cases since national tracking began. The disease almost always requires direct, significant exposure to rodent waste — casual outdoor activity in infected areas without disturbing nests or enclosed spaces is not considered high risk. That said, the disease kills roughly 4 in 10 people who develop full respiratory symptoms, making it one of the more lethal infectious diseases tracked in the US.
• 6
  Can you get hantavirus from your dog’s lick or bite? No — hantavirus does not live or replicate in a dog’s saliva · A dog lick or nip cannot transmit hantavirus to a person under any circumstances

  Because hantavirus does not infect dogs, it cannot be present in their saliva, blood, or breath. A dog that ate an infected mouse five minutes ago cannot pass the virus through a lick. The only realistic scenario where a dog might contribute to human exposure is if fresh rodent material — urine, droppings, or saliva — is physically on the dog’s coat or paws and is then disturbed in a way that creates aerosolized particles near a person’s face. Even in that scenario, the risk requires disturbing the material into airborne particles. A simple paw-wipe or coat brush down with gloves is sufficient to address that concern. Routine hand washing after handling a dog that has been in rodent-active areas is good practice.
• 7
  My dog caught a mouse — what should I do? Do not panic · Do not let the dog bring the mouse inside or shake it · Put on rubber gloves before handling · Place dead mouse in a sealed bag with disinfectant · Wipe your dog’s paws and muzzle with a damp cloth while wearing gloves · Wash your hands thoroughly

  The CDC’s guidance for handling any dead rodent — whether your dog caught it or it was trapped — is consistent: never pick up a dead mouse or rat bare-handed, and never vacuum or sweep up rodent droppings dry (this sends particles airborne). If your dog drops a mouse on the floor indoors, put on rubber, latex, or nitrile gloves before cleaning it up. Spray the dead mouse and surrounding area with a disinfectant solution — a dilution of one part household bleach to nine parts water works well. Let it soak for 10 minutes before wiping. Bag the mouse and cleaning materials in a sealed plastic bag and dispose of it in your outdoor trash. Wipe down your dog’s muzzle and paws with a damp cloth while you still have your gloves on. Wash your hands before removing the gloves. The goal throughout is to avoid touching your face or disturbing any material in a way that creates airborne dust.
• 8
  Can mice droppings make my dog sick — even if not from hantavirus? Yes — other diseases absolutely can · Leptospirosis (bacterial, in rodent urine) is a serious risk for dogs · Parasites like fleas and ticks can transfer from rodents to dogs · Rodenticide poisoning is a significant danger if poison baits are involved

  While hantavirus specifically cannot harm your dog, rodents carry a range of other health threats that absolutely can. Leptospirosis — a bacterial infection spread through rodent urine and standing water contaminated by it — is one of the most practically important. Dogs are susceptible to leptospirosis and it can cause kidney failure, liver disease, and in severe cases death. There is a widely available vaccine for leptospirosis that veterinarians routinely recommend, especially for dogs in rural, wooded, or water-adjacent environments. Beyond leptospirosis, rats and mice carry fleas and ticks that can transfer to your dog and then into your home. And if your property uses rodenticide poison baits to manage mice, a dog that catches and eats a poisoned mouse faces a serious risk of secondary rodenticide toxicity. If your dog catches a lot of rodents and is not vaccinated against leptospirosis, that is a more immediate conversation to have with your veterinarian than hantavirus.

This matters for dog owners because your dog may not be at risk, but you and your family are if your dog is bringing rodent material into the home. Knowing what to watch for in yourself — especially after clearing a rodent-infested space, barn, or shed — could save your life. HPS is frequently misdiagnosed as flu in its early stages.

• 1
  Days 1–5 After Symptoms Begin — “Flu-Like” Phase (Easy to Miss)

  Fatigue, fever, and deep muscle aches — especially in the large muscles of the thighs, hips, and back. Headache, chills, and dizziness are common. Some people also experience nausea, vomiting, or stomach pain. There is no cough or respiratory distress at this stage. This is the window where most people assume it’s just flu. If you have had any rodent exposure in the past 1–8 weeks, tell your doctor immediately — do not wait for breathing symptoms to develop.
• 2
  Days 4–10 — Cardiopulmonary Phase (Medical Emergency)

  Suddenly and rapidly, the lungs begin filling with fluid. Shortness of breath, dry cough, and a feeling of tightening in the chest develop quickly — often within hours. Blood pressure may drop. At this point, the condition has progressed to full HPS and the patient needs intensive care unit admission immediately. Without ICU-level breathing support, most deaths from HPS occur within 24–48 hours of this phase beginning. Do not drive to an urgent care clinic — call 911.
• 3
  Recovery or Critical Deterioration

  Patients who survive the cardiopulmonary phase typically begin recovering within days to weeks with hospital support, including oxygen therapy and sometimes mechanical ventilation. Survivors often recover fully without long-term lung damage — HPS, unlike some respiratory diseases, tends not to leave lasting scarring if the patient makes it through. Those who do not receive care in time deteriorate rapidly. There is no specific antiviral drug proven effective against HPS strains in the United States. Treatment is supportive — keeping the patient alive while the immune system fights the infection.

Use these contacts for official guidance on hantavirus prevention, pet health, and local rodent control services. If you or a family member has symptoms after rodent exposure, call 911 or go to an emergency room — do not wait.

Use these buttons to locate veterinarians, emergency animal hospitals, pest control professionals, and urgent care facilities near your current location.