Why Are Vaccines Important

Most people know, on a basic level, what vaccines are. However, do they actually know what a vaccine can do? Vaccines are the insertion of dead or weakened pathogens into the body. The immune system uses the pathogens to create immune cells that kill the disease-causing pathogens when they attack in the future. Receiving a vaccine for disease will cause the person to be actively immune, protects the person and their loved ones, and can assist in wiping out a communicable disease altogether.
Active immunity is exposure to antigens from pathogens entering the body. This results in the immune system producing its own response. Vaccines are a form of artificial active immunity. The importance of being actively immune to a pathogen is that