Abstract

Immunization can be termed as the process of protecting a person from a specific disease. Stimulation of the body’s own immune response (by administration of a vaccine) is referred to as active immunization; while passive immunization is temporary immunity brought about by the transfer of pre-formed antibody, or specifically sensitized lymphocytes, from an immune individual to a non-immune individual – the latter thus becoming immune without necessarily having had contact with the corresponding antigen(s).