What is Immunization?
[[Image:Poliodrops.jpg|right|thumb|A child being immunized against [[polio]].]] '''Immunization''' is a way of [[prophylaxis|preventing]] a person from getting a [[disease]]. This is done by making the person's body come into contact with a bit of the disease so that the body learns how to fight it. The body's ability to fight off a disease is called its [[immune system]]. The material is known as an [[antigen|immunogen]]. Immunization is the same as [[inoculation]] and [[vaccination]] because inoculation and vaccination use an infecting agent (something that infects) in the same way that immunization does. When the human immune system is [[Exposure (toxicology)|exposed]] to an [[infection]] once, it can learn how to cope quickly if it is exposed to it again. By exposing an individual to an immunogen in a controlled way, the body will be able to protect itself from that infection later on in life. [[Category:Immunization| ]]