Hantavirus FAQ

Hantaviruses are viruses carried by some rodents. In people, certain types can cause severe lung or kidney illness.

Early symptoms may include fever, fatigue, muscle aches, headache, dizziness, chills, nausea, vomiting, diarrhea, or stomach pain. Later symptoms can include coughing and shortness of breath.

Most infections happen after breathing dust contaminated by infected rodent urine, droppings, or saliva. Exposure can occur in cabins, sheds, campsites, farms, or stored vehicles.

Most hantaviruses are not contagious between people. Andes virus is the key exception and has been linked to limited spread through close, prolonged contact.

Most hantaviruses do not spread between people. Andes virus is an exception where rare person-to-person spread has been reported.

Keep rodents out, seal holes, store food in sealed containers, remove nesting sites, ventilate closed spaces, and use wet-cleaning methods for droppings.

Do not sweep or vacuum dry droppings. Ventilate first, spray disinfectant or bleach solution, let it soak, then wipe with gloves and dispose safely.

There is no widely used specific cure for hantavirus pulmonary syndrome. Early medical care, oxygen, intensive monitoring, and supportive treatment can improve outcomes.

There is no specific cure that clears hantavirus infection. Care focuses on early diagnosis, breathing support, fluids, and intensive monitoring when needed.

The death rate depends on the virus type, disease severity, and care access. CDC cites about 38% fatality for people who develop respiratory symptoms, and WHO notes severe HCPS can reach higher case fatality in some settings.

No reliable public health guidance recommends ivermectin as a hantavirus treatment. Do not self-medicate; seek medical care for possible exposure or symptoms.

Vaccine availability varies by country and virus type. There is no widely available vaccine for the hantavirus pulmonary syndrome risks most travelers search for, so prevention remains essential.

Public health agencies currently describe broad public risk from the 2026 cruise ship event as low. Andes virus can spread in limited close-contact settings, but it is not known to spread like COVID.

Seek urgent care for shortness of breath, chest tightness, severe weakness, blue lips, confusion, or fast worsening after possible rodent exposure.

Use official surveillance pages such as CDC reported cases, WHO Disease Outbreak News, ECDC updates, and local health department alerts.

Dogs and cats are not known to transmit hantavirus to people, but they may bring infected rodents into homes. Prevent rodent access and clean safely.