Immunity
Medical term · I
Protection against infectious diseases through the action of the immune system. You can become immune to some diseases by catching them. Vaccinations also provide immunity.
Related terms
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Immune systemThe way the body defends itself against infection, disease and outside substances.
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InfectiousConditions which can be passed from person to person by micro-organisms like viruses or bacteria.
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Gamma globulin (IgG)A natural substance in the blood that protects against disease and infection. It is also used as a drug to boost immunity.
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Humoral immunityImmunity from infection and disease that comes from the release of antibodies in the blood.