Core Vaccines for Cats
The two core feline vaccines are the FVRCP and rabies vaccines. Cats should be vaccinated every four weeks when they are still kittens according to the following schedule:
8 weeks of age: FVRCP vaccine
12 weeks of age: FVRCP vaccine
16 weeks of age: FVRCP and rabies vaccines
The FVRCP vaccine protects your cat against rhinotracheitis (feline herpesvirus), calicivirus, and panleukopenia, which are severe and highly contagious respiratory and gastrointestinal viruses. Cats should receive their first FVRCP vaccine when they are 8 weeks old and then every 4 weeks until they are at least 16 weeks old.
Both indoor and outdoor cats should be vaccinated against rabies as the disease can easily be transmitted to humans and because there is no way to guarantee that your cat will not accidentally end up outside and possibly meet another animal, cats should be vaccinated starting at 16 weeks of age. Cats should receive a booster shot 1 year after the first vaccine, regardless of how old they were when they got their first shot.