Definitions for "Boosting"
When nonspecific or remote sensitivity to tuberculin (purified protein derivative [PPD] in the skin test) wanes or disappears with time, subsequent tuberculin skin tests can restore the sensitivity. This is called boosting or the booster phenomenon. An initially limited reaction size is followed by a larger reaction size on a later test, which can be confused with a conversion or a recent M. tuberculosis infection. Two-step testing is used to distinguish new infections from boosted reactions in infection-control surveillance programs, but this method is not recommended for testing contacts.
A positive reaction to a tuberculin skin test, due to a boosted immune response from a skin test given up to a year earlier; occurs in people who were infected a long time ago and whose ability to react to tuberculin had lessened. Two-step testing is used in TB screening programs to tell the difference between boosted reactions and reactions caused by recent infection (skin test converter).
Keywords:  lexiva, ritonavir, hiv, medicines, drug
taking small amounts of ritonavir with certain HIV medicines like LEXIVA to increase the amount of drug in your body.
Boosting is a machine learning meta-algorithm for performing supervised learning. Boosting occurs in stages, by incrementally adding to the current learned function. At every stage, a weak learner (i.e., one that has an accuracy only slightly greater than chance) is trained with the data.