Artificial Active Immunity

Artificial active immunity occurs when your body is intentionally exposed to a safe form of an antigen, such as a vaccine or toxoid, to trigger an immune response.This stimulates your immune system to produce its own antibodies and memory cells, providing long-lasting or lifelong protection without causing the actual disease.The pathogen is made safe so there is no risk of infection.The vaccine may be made of killed or inactivated bacteria or virus, attenuated strains of live bacteria or virus, toxin molecules that have been altered or genetically engineered antigens.Small amounts of the safe antigen are injected, usually into a muscle, or taken by mouth. This triggers the primary immune response.If the person comes into contact with the live pathogen, the secondary immune response is triggered.