Once administered, vaccines don’t harm your body. Instead, they trigger the production of a vital protein known as an antibody. Antibodies allow the body to quickly identify a foreign invader and then help the immune system shield itself from that threat. The body creates antibodies after recognizing a virus – either through a vaccine or everyday exposure. The difference is that, with a vaccine, your body will have practiced its response to mitigate or prevent unwanted health consequences before you are exposed to the actual virus.
In other words, antibodies are the soldiers guarding your body, protecting it from possible threats.