FIV stands for Feline Immunodeficiency virus. It is a virus that has many similarities to the human immunodeficiency virus (HIV) but only affects cats.

It is estimated that approximately 15% of cats in Australia are infected with the FIV virus. The highest prevalence is seen in areas with high numbers of free-roaming, sexually intact male cats.

Bite wounds inflicted by FIV-infected cats are the main way that the virus is transmitted. Cats that go outside unsupervised are at the most risk.

Cats that become infected with the virus usually have a period of transient fever and reduced appetite 1-3 months after they are infected. They then enter a subclinical phase where no signs of disease are seen. Some cats never progress past this phase, but over time immunodeficiency can develop, resulting in an increased risk of infections and cancers.

Keeping cats indoors, or in secure outdoor enclosures, is the best way to prevent FIV transmission. Cats can live happy, healthy lives indoors, and they have much lower risk of injury and infectious diseases. Keeping cats indoors also helps keep our wildlife safe. The website https://indoorpet.osu.edu has some great information on appropriate play, exercise and environmental enrichment for indoor cats.

Cats that are kept 100% indoors do not require vaccination for FIV.

Not all cat owners are able to manage to keep their cats completely indoors, and for these cats we recommend vaccinating for FIV.

While vaccinations do not provide complete protection against FIV, they do reduce the risk of contracting the virus.

There were supply issues with the FIV vaccination since 2024. However this is no longer the case. If your cat was previously vaccinated against FIV but has not had a vaccine in over 18months, we would recommend to restart the course of vaccinations. Have a chat to our team today for advice specific to your cat.