Thanks to Lisa A. Pierson, DVM for allowing us to post her wonderfully informative article on cat vaccination from her website which also includes information on feline nutrition, health and rescue: http://www.catinfo.org This article contains:
General suggestions
Side effects including sarcomas (cancerous tumors), chronic kidney disease, allergic or anaphylactic reaction, vomiting, diarrhea, lethargy, soreness at the injection site, lameness
Vaccine types
Decision-making criteria – including comments on titers
Conclusions
Overview
A vaccination is a preparation of microorganisms (pathogens), such as viruses or bacteria, that is administered to produce or increase immunity to a particular disease. There can be no disputing that vaccines save lives but they also have some serious side effects which will be discussed on this webpage.
Please note that the diseases we most commonly vaccinate cats for are caused by viruses – not bacteria. While it is difficult to induce long-term immunity to bacterial infections, vaccines targeted toward viruses are much more efficient at conferring long-term immunity in the recipient.
There are 5 viral diseases that cats are commonly vaccinated for: