Immunization and Prevention
Immunization is a process that provides protection against certain diseases, such as measles, mumps, and rubella. It involves the injection of a weakened or killed form of a disease-causing organism, or a laboratory-made version of a disease-causing substance. Once immunized, the person has developed immunity to that disease. Immunization can provide both active and passive protection against illnesses.
Active immunization is the process of stimulating a person's immune system to recognize and destroy a specific disease-causing agent. This type of immunization is achieved through the administration of a vaccine, which contains a weakened or killed form of the disease-causing agent. The body recognizes the weakened or killed agent as foreign and produces antibodies to protect against it.
Passive immunization is the process of introducing pre-made antibodies into a person's body. These antibodies are produced by other people or animals who have been immunized against a particular disease. Passive immunization can be achieved through the injection of immune serum globulin, which is a laboratory-made version of antibodies. These antibodies provide immediate protection against the disease.