HIV/AIDS Glossary

Immunity

Protection against disease caused by infectious microorganisms or by other foreign substances. Immunity can be acquired through vaccination, by contracting the disease, or by transfer of antibodies produced by another person or animal. Immunity also includes the protective barriers that a person is born with, such as the skin and mucous membranes.

Related Term(s): Acquired Immunity, Innate Immunity

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Flow chart describing the different classifications of immunity

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