Fact: Simply put, a vaccine is a way to prepare our bodies to fight off certain diseases without actually having the disease itself. Vaccines trigger an immune response in our bodies to learn how to make the antibodies to a specific disease. After getting a vaccine, you might feel the symptoms of this immune response (headache, fatigue, muscle aches). This is not the vaccine making you sick, but instead this is your body’s immune response. Vaccination has helped to eradicate other diseases in the United States, such as polio and smallpox, that were once very common. Specific to Covid-19, clinical and real-world data have demonstrated that Covid-19 vaccines are 90-100% effective at preventing severe disease, hospitalization, and death from Covid-19.