<unk>  makes people immune to specific diseases by means other than waiting for them to catch the disease. The purpose is to reduce the risk of death and suffering.<unk>  against infections that can cause serious illness is beneficial. Founded on a germ theory of infectious diseases, as demonstrated by Louis Pasteur's discoveries, modern medicine has provided means for inducing<unk>  against a widening range of diseases to prevent the associated risks from the wild infections. It is hoped that further understanding of the molecular basis of<unk>  will translate to improved clinical practice in the future.
Artificial induction of immunity
Artificial immune system
Tolerogenic therapy
Vaccine contamination with SV40
Immunization
Pre-exposure prophylaxis
Vaccine shedding
Non-specific effect of vaccines