FIV in a multi-cat household: should the cats be separated?
In a home with three neutered cats that have lived together for years without fighting, one tests FIV positive at a check-up. The other two are healthy.
What is the most appropriate recommendation?
chevron_right Show answer and explanation
A. Separate the positive cat from the others for life
In stable households without fighting, the transmission risk is low. Separating cats bonded for years causes stress and harms welfare without clear benefit.
B. Remove shared bowls and stop them grooming each other, as these are the main route of transmission
FIV spreads poorly through social contact; that is the characteristic route of FeLV. Saliva only transmits FIV efficiently when inoculated through a deep bite.
C. They can continue living together: transmission occurs mainly through deep bites; watch for fights, test the other cats and avoid introducing new cats that would upset the hierarchy
Correct. Transmission between neutered cats that do not fight is uncommon. The key is to avoid situations that provoke aggression, such as introducing new cats.
D. Vaccinate the negative cats against FIV
No FIV vaccine is available in Europe and, where one existed, protection was incomplete and it interfered with antibody tests.
lightbulb Key takeaway
The typical FIV cat is an adult entire male with outdoor access and a history of fighting. Neutering reduces fighting and, with it, transmission. Mother-to-kitten transmission is rare under natural conditions.
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.