The value of the FIV vaccine is in doubt, therefore it should not be given (as at 2011). In answering the question “Should I vaccinate my cat against FIV?” I have shamelessly referred to one source: Dr Fogle in his book Complete Cat Care. Of course you should do your own research and ask questions of your veterinarian. Personally, I vaccinate my cat the minimum consistent with protecting his health.

Cat Vaccination. Photo: The Answer Vet

FIV is quite common amongst free-ranging cats and many are healthy but they transmit the virus to other cats where it may cause serious ill-health.

Studies of cats at veterinary clinics indicate that “10-20 percent of sick cats have been exposed to FIV, usually through bites or repeated social licking”.

First symptoms of an infection are:

• fever
• lethargy
• possible lymph node enlargement

Later good heath returns but then other signs might develop such as:

• weight loss
• gum disease
• loss of appetite
• intermittent fever
• conjunctivitis
• tumours
• fever

There is a vaccine for FIV which is licensed in the USA.

However, academic researchers “question its value”.

Therefore Dr Fogle who is a high profile and well regarded vet/author does not give this vaccination.

P.S. – The minimal quotes, which I hope are acceptable are from Dr Fogle’s book Complete Cat Care. This is an excellent book. Note: I have dated the advice as 2011. Science advances and therefore you may have more up to date information in which case please leave a comment which I may incorporate into this post.