Home > Term: booster phenomenon
booster phenomenon
A phenomenon in which some persons (especially older adults) who are skin tested many years after infection with M. tuberculosis have a negative reaction to an initial skin test, followed by a positive reaction to a subsequent skin test. The second (i.e., positive) reaction is caused by a boosted immune response. Two-step testing is used to distinguish new infections from boosted reactions (see Two-step testing).
- Part of Speech: noun
- Industry/Domain: Health care
- Category: Tuberculosis
- Company: U.S. CDC
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- Natalie02
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