Human Vaccines - Infectious & Non Infectious Diseases

A vaccine can be defined as an inactivated form of bacteria or virus that is injected into the body to simulate an actual infection. The injected dead microorganisms don't cause a person to become sick. Instead, they stimulate an immune response by the body which will fight against such  illness. It covers both the infectious and non-infectious disease targets. 
Mediated protection is a complex challenge in generating vaccines. Currently available vaccines have largely been developed empirically without understanding on how they activate the immune system. Their protective efficacy is conferred by the induction of antigen-specific antibodies in the initial stages. However, antibody-mediated protection is more than the peak of vaccine-induced antibody titers.