You are supposed to get a tetanus defense shot every 10 years too. The logic for a booster actually would be defense, it boosts antibodies which helps block mo

You are supposed to get a tetanus defense shot every 10 years too. The logic for a booster actually would be defense, it boosts antibodies which helps block more infections. An injection designed to modulate immune response by exposing the immune system to the target antigen is certainly a vaccine though.