What is Zoonosis?
A disease that can be transmitted between animals and humans, such as rabies, leptospirosis, and certain intestinal worms.
A zoonosis is any infectious disease that can be transmitted naturally between animals and humans, whether through direct contact, an insect vector bite, contact with feces and urine, or consumption of contaminated food or water. Among pets, important examples of zoonoses include rabies, leptospirosis, visceral leishmaniasis, certain intestinal worms (such as those caused by Toxocara species), sarcoptic mange, and ringworm (dermatophytosis).
The risk of transmission varies considerably depending on the disease: some require direct, prolonged contact, while others depend on a vector, such as the sand fly in leishmaniasis. Children, older adults, and immunosuppressed people tend to be at higher risk of complications if infected. This does not mean living with pets is dangerous — on the contrary, most zoonoses have simple, effective prevention measures.
Preventing zoonoses involves keeping a pet's vaccinations and deworming up to date, controlling fleas and ticks, washing hands after contact with feces or while cleaning a litter box, and seeking veterinary care as soon as a pet shows signs of illness. Keeping a pet's routine care up to date protects both the animal and the whole family.
Important notice
This calculator is for educational purposes and does not replace a veterinary evaluation. When in doubt, consult a veterinarian.Related terms
Leptospirosis
A serious bacterial infection transmitted mainly through rat urine and contaminated water or soil, which attacks the kidneys and liver; it is also a zoonosis.
Leishmaniasis
A serious infectious disease transmitted by sand fly bites that can cause skin lesions, weight loss, and organ failure in dogs; it is also a zoonosis.
Giardia
A common intestinal infection caused by a microscopic protozoan parasite, spread through contaminated water or food, and one of the leading causes of diarrhea in puppies and kittens.