Immunization tricks the body into building defenses against a disease.
In reaction, the immune system manufactures antibodies, building up a defense against the disease microbes. Repeated doses, or boosters, may be needed at various times to maintain immunity. Though most immunizations carry little risk, always check with a doctor before having a child immunized and postpone shots if the child is sick. A chickenpox vaccine is also available after 12 months. Belo Interactive Inc., All Rights Reserved.