Firstly, a cat’s resistance to diseases decreases after sterilization surgery. Without vaccination, the body lacks antibodies; however, vaccination leads to the production of antibodies, which can combat infectious diseases. For instance, Feline Panleukopenia is an infectious disease. Therefore, if a cat contracts Feline Panleukopenia due to decreased resistance after surgery, it faces the risk of death.

Vaccination Recommendations
Thus, we recommend completing the vaccination before scheduling sterilization. For cats that have not been vaccinated within the first year, three doses of the vaccine are required to produce antibodies.
Is One Vaccine Dose Sufficient?
Some people may harbor a fluke mentality, such as thinking that one dose of the vaccine is enough to proceed with sterilization. Is this feasible?
Recommendation: Since you have already started the vaccination, it is advised to complete the full series of three vaccine doses before scheduling the sterilization surgery.
Why Are Three Vaccine Doses Necessary?
In fact, a single vaccine dose is insufficient to produce an adequate level of antibodies. Therefore, only after completing the three doses can antibodies be effectively produced. In this case, it is recommended that you complete the vaccination before proceeding with the sterilization surgery.
Original article by KPTer, if reproduced, please cite the source: https://www.kaipet.com/en/unvaccinated-cats-undergo-sterilization-vaccination-crucial
Comments(2)
Thanks for this vital advice! I’m curious, what’s the recommended waiting time *after* the third vaccine dose before scheduling sterilization?
@CriticX:Thank you for your excellent question, CriticX! After completing the third vaccine dose, it’s generally advised to wait approximately 7-14 days for your cat’s immunity to fully develop before proceeding with sterilization. We always recommend consulting your veterinarian for personalized advice and to ensure the best health outcomes for your cat.