Cat Feline Immunodeficiency Virus: Living Well With a Manageable Condition

FIV-positive cats can live long, healthy lives with appropriate management. Understanding the disease prevents unnecessary euthanasia and enables welfare-centred care.

Key Facts

Feline immunodeficiency virus (FIV) is a lentivirus similar to HIV affecting cats worldwide
It is transmitted primarily through bite wounds — outdoor entire males are most commonly affected
FIV-positive cats can live normal lifespans — many never progress to clinical immunodeficiency
Cats with FIV should ideally be kept indoors to prevent transmission and protect their compromised immune system
FIV-positive cats are commonly euthanased unnecessarily based on diagnosis alone, particularly in shelters
Vaccination exists for some strains but is not universally recommended due to variable efficacy

Welfare Considerations

FIV diagnosis is frequently a death sentence in shelters, despite the fact that many positive cats can live years in good health. The welfare failure lies in treating diagnosis as equivalent to terminal illness when it is not. FIV-positive cats need homes where they are kept indoors, receive good nutrition and preventive care, and have prompt treatment when secondary infections occur. They can be housed with other FIV-positive cats without risk. Welfare-centred shelters test for FIV, communicate honestly about the condition, and find appropriate homes for positive cats rather than defaulting to euthanasia.

What You Can Do

Consider adopting an FIV-positive cat — they can live long, loving lives with appropriate indoor management
Keep FIV-positive cats indoors to protect them and prevent transmission
Ensure regular veterinary check-ups to catch secondary infections early
Advocate for shelters to adopt FIV-positive cat adoption programmes rather than default euthanasia
Neuter all cats to reduce bite-wound transmission and population pressure on shelters