You cannot get COVID-19 from the vaccine.
You cannot get COVID-19 from the vaccine. Every day, a healthy immune system successfully fights off thousands of germs. Antigens are parts of germs that cause the body’s immune system to go to work to build antibodies, which fight off diseases. The antigens in vaccines come from the germs themselves, but the germs are weakened or killed so they cannot cause serious illness. Even if people receive several vaccinations in one day, vaccines contain only a tiny fraction of the antigens they encounter every day in their environment. Vaccines stimulate the immune system to produce antibodies to fight off serious vaccine-preventable diseases.