The vaccine consists of many different components, but the main component is antigen. Antigens are the active ingredient of the disease. These antigens can be dead or weakened cells of disease. When injected into the body, they will "challenge" the body's immune system and produce antibodies against the disease. This allows the body to quickly produce antibodies when exposed to the virus and ensure that the cat does not get sick.

Even if you get sick, the severity will be reduced. For any vaccine, the biological properties of the antigen are weak enough but sufficiently enough to mimic the disease of full strength to activate the cat's immune system.

In this case, try to ensure that the cat will not get sick due to the vaccine. Attenuated vaccines and inactivated vaccines, both types of vaccines can stimulate the body's immune response, but their methods of action are completely different.