immunization

immunization “ Vaccination is the process of administrating a vaccine into the body or the act of introducing a vaccine into the body to produce immunity to a specific disease.” Immunization is the process of the body building up immunity to a particular disease. Immunization describes the actual changes in the body after receiving a vaccine. Vaccines work by fighting the pathogen and then recording it in their memory system Live pathogen Natural live vaccine Live pathogen Attenuated (weakening) Inactivation Killed pathogens (vaccine) Chemical Modification Toxin Toxoid (vaccine) Live attenuated vaccine Attenuated non-pathogenic form (vaccine) Fig. . Types of vaccines XII Std Biology-Zoology Chapter- XII Std Biology-Zoology Chapter- Human Health and Diseases to ensure that the next time this pathogen enters the body, it is eliminated far quickly. Once, the body is able to fight against the disease, it is believed to have built the immunity for it, also known as the body being immunized against the disease.