General Risks (Side Effects) of vaccines:
Currently available feline vaccines have an excellent safety record. Most common reactions are lethargy, anorexia, fever, vomiting, breathing difficulties, facial swelling and itching for a few days after vaccination, or local inflammation at the site of injection. Rarely anaphylaxis is seen. In one study, more than 1.25 million doses of various vaccines were administered to nearly 0.5 million cats. Adverse reactions within 30 days of vaccination were 0.52%, with 92% of these reactions occurring within the first 3 days. Feline injection-site sarcomas (FISS): Current information suggests the risk of sarcoma development following vaccination is actually very low (probably well below 1/10,000 doses of vaccine). Based on current understanding, it is likely that vaccines are not uniquely implicated in the development of injection site sarcomas in cats, and that any injection carries risk. The Advisory Panel of the American Association of Feline Practitioners (AAFP) recommends post-vaccination monitoring. Cat owners should use the 3-2-1 Rule to monitor the vaccine site for swelling or lumps in order to detect potential sarcomas very early. Biopsy of any mass detected at injection site is warranted if it (a) remains present 3 months after vaccination, (b) is larger than 2 cm in diameter, or (c) is increasing in size 1 month after vaccination. (AAFP Feline Vaccination Advisory Panel Report)
A word about Physical Examinations: We recommend your cat receive a complete physical examination by a veterinarian once a year. Certain patients, like kittens and geriatrics, often benefit from more frequent examinations. Many topics are discussed during annual visits, including internal (heartworm, intestinal worms, etc.) and external (fleas, ticks, etc.) parasite control, weight, nutrition, and many more.
-Thank you, The Doctors and Staff at Clovercroft Veterinary Hospital