Feline Immunodeficiency Virus (FIV): Managing a Misunderstood Condition

FIV-positive cats can live long, healthy lives with proper management, but misunderstanding of the disease leads to unnecessary euthanasia and shelter discrimination against affected cats.

Key Facts

FIV infects approximately 1-5% of healthy cats globally and up to 15% of sick or at-risk cats
FIV is transmitted primarily through deep bite wounds — casual contact like shared food bowls or grooming poses minimal risk
FIV-positive cats that are stable and living indoors can live 5-10+ years without AIDS-defining illness
There is no cure for FIV, but antiviral therapy (including human antiretrovirals) can reduce viral load in some cats
FIV vaccination was available in the US (Fel-O-Vax FIV) but interfered with testing and was discontinued in 2015
Regular veterinary monitoring (every 6 months) allows early detection of secondary infections or immune suppression
FIV-positive cats should be kept indoors to protect them from disease exposure and prevent transmission
Shelter surveys show FIV-positive cats are euthanised at dramatically higher rates despite good prognosis when managed

Welfare Considerations

FIV's greatest welfare impact may be the discrimination it causes rather than the disease itself. Many shelter cats are euthanised immediately upon an FIV-positive test result, denying them potentially a decade of healthy life. Adopters frequently decline FIV-positive cats based on misinformation about transmissibility and prognosis. For cats with FIV who do develop AIDS-defining illness, welfare concerns centre on recurrent infections, weight loss, oral disease, and immune-mediated conditions. Proactive management — good nutrition, stress reduction, dental care, prompt treatment of secondary infections, and regular monitoring — dramatically improves prognosis. Veterinary and shelter communities play a crucial role in correcting the persistent myth that FIV equals a death sentence.

What You Can Do

Consider adopting an FIV-positive cat — they make wonderful companions and are often overlooked
Share accurate information about FIV transmissibility: it is NOT easily spread between cats in peaceful households
Ensure FIV-positive cats are kept indoors and receive twice-yearly veterinary monitoring
Support shelters that have progressive FIV adoption policies rather than automatic euthanasia
Feed FIV-positive cats a nutritionally complete diet and avoid raw food (infection risk)
Neuter all cats and prevent fighting — the primary route to reduce FIV transmission in cat populations