What is FIV?
Feline Immunodeficiency Virus (FIV) is a virus that affects cats. Rest assured, it’s specific to the cat family and cannot be spread to humans or other animals. FIV weakens a cat’s immune system, making them more prone to infections like upper respiratory conditions or dental disease.
While FIV is often misunderstood, it’s important to separate fact from fiction to ensure these cats get the care and love they deserve.

How Does it Spread?
The most common way FIV spreads is through deep bite wounds. These wounds are typically the result of fights between unaltered (not spayed or neutered) outdoor cats, often during mating. Casual interactions, such as sharing food bowls, grooming, or even touching an FIV-positive cat and then an FIV-negative one, are highly unlikely to transmit the virus.
For spayed or neutered cats with a peaceful temperament, the risk of transmission is very low. Many FIV-positive and FIV-negative cats can safely live together in the same home without spreading the virus.
What About FIV in Community Cats?
If you’re caring for feral or community cats, there’s no need to panic! Research shows that community cats have a low rate of FIV, similar to owned cats. Since FIV primarily spreads through deep bites, ensuring community cats are spayed or neutered can greatly minimize the chances of transmission.
Leading organizations like Alley Cat Allies and the American Association of Feline Practitioners recommend against testing community cats for FIV due to the high costs, inconclusive results, and low threat of transmission. Instead, funds are far better spent on spay/neuter programs such as Trap-Neuter-Return (TNR) or Shelter-Neuter-Return (SNR).
For FIV-positive community cats, caregivers can help by providing:
- A quiet space or shelter
- Nutritious food and clean water
- Swift veterinary care if they appear unwell
These cats can live long, happy lives in their outdoor homes with minimal intervention.
How is FIV Diagnosed?
To know if a cat has FIV, a blood examination called an ELISA test is used. This test detects antibodies the cat’s body produces in response to FIV, and it is the standard initial screening test for FIV. A positive result likely indicates the cat has been infected. However, in rare cases of a false positive, a PCR test can be done for a more definitive diagnosis.
It’s important to note that ELISA testing is not as accurate for cats under 6 months of age, so we do not recommend testing kittens before they are 6 months old.
If you have multiple cats at home and one tests FIV-positive, it’s a good idea to test the others. Annual testing is also recommended if FIV-positive and FIV-negative cats share a home.

Signs & Symptoms of FIV
FIV itself doesn’t directly cause illness but weakens the immune system, leaving the cat more susceptible to other infections. Symptoms and signs to watch for include:
- Gingivitis or inflammation of the gums
- Weight loss or poor appetite
- Fever (especially of unknown origin)
- Chronic inflammation of the eyes (conjunctivitis)
- Vomiting and diarrhea
- Swollen lymph nodes
These signs are not exclusive to FIV and may occur with other illnesses. If your cat shows any of these symptoms, consult your veterinarian.
Life with an FIV-Positive Cat
Did you know that FIV-positive cats can live long, healthy lives? Research shows there’s little difference in life expectancy between FIV-positive and FIV-negative cats if they’re well cared for.
Here’s how to support your FIV-positive kitty:
- Keep Them Indoors: This protects them from infections and prevents the risk of spreading FIV to other cats.
- Healthy Lifestyle: Provide a nutritious diet, enriching playtime, and twice-yearly check-ups that include blood and urine tests.
- Prompt Veterinary Care: Quickly address any signs of infection or illness.
If you have other cats, you can safely keep your FIV-positive feline with them as long as they get along and don’t engage in fights. Provide separate food bowls to minimize any risks, though casual sharing is unlikely to cause transmission.
Caring for FIV-Positive Cats Doesn’t Have to Be Scary
With love, proper care, and regular vet visits, FIV-positive cats can thrive! These beautiful companions have so much to offer and often get overlooked because of myths surrounding their condition.
Remember, being FIV-positive doesn’t mean the end of the road. These cats can lead full, healthy lives just like their FIV-negative friends—with a little extra TLC.
This blog has been reviewed and created in collaboration with veterinarian and medical director Dr. Daschofsky, DVM. Together, let’s spread understanding and compassion for FIV-positive cats!
