MICROM 301 Lecture Notes - Lecture 16: Hepatitis B Immune Globulin, Passive Immunity, Immunity (Medical)
Document Summary
Immunization: process of inducing immunity, used to protect against disease. Naturally acquired immunity: gain of adaptive immunity through normal events, such as exposure to an infectious agent. Immunization mimics same events, protecting disease against artificially acquired immunity. Active immunity: result of an immune response in a person who has been exposed to an antigen. B and t cells are activated and they then multiple, giving the person lasting protection due to immunological memory. Naturally from actual infection or artificially from vaccination. Mother"s igg antibodies cross the placenta and protect the fetus. Antibodies remain active in newborn during first few months of life. Infectious disease do not develop in baby until 3-6 months after mother"s antibodies degraded. Result from breast feeding: secretory iga in breast milk protects the digestive tract of child. Artificially acquired passive immunity involves injecting a person with antibodies produced by other people or animals. Prevent disease before or after likely exposure to pathogen.