The feline leukemia virus vaccine is meant to protect cats from the feline leukemia virus. This virus particularly affects outdoor cats and cats which live in multiple cat households and cats which interact with other cats. Therefore, the vaccination is very essential for outdoor cats and for those that live in households where there are many cats. Indoor cats which do not mingle with other cats do not necessarily need to be vaccinated. However, this vaccine is recommended for kittens since their immunity is low and their lifestyle tends to change.

The feline leukemia virus vaccine aims to build immunity against the feline leukemia virus. The vaccine is available in both injectible and transdermal forms. In case of most vaccines, the cat will have to receive an initial dose followed by a couple of booster doses. The first dose of the feline leukemia vaccine is recommended at 8 to 10 weeks of age. After 3 to 4 weeks, the next booster dose is given. A final booster dose is given one year later. After this, annual vaccinations are recommended. The feline leukemia virus vaccine has been associated with some risks and side effects. Therefore, it is advisable to discuss with your vet whether or not your cat needs to receive this vaccination.