Vaccines help protect our bodies from harmful diseases by training the immune system to recognize and fight specific germs. When a vaccine is given, it contains weakened or inactive parts of a virus or bacteria that do not cause illness but teach the immune system to respond quickly if the real infection appears. This helps prevent people from getting sick or reduces the severity of illness.
Vaccines have been crucial in controlling and even eliminating dangerous diseases such as smallpox and polio. By vaccinating many people in a community, herd immunity is created, which protects those who cannot be vaccinated. Vaccination is one of the safest and most effective ways to keep ourselves and others healthy. Shutdown123