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A test for previously acquired immunity to diphtheria, using an intradermal injection of diphtheria toxin.‘The Schick test, in which a tiny quantity of diphtheria toxin protein is injected into the skin of the forearm, can show whether an individual is immune to diphtheria.’‘By 1921 Park and his colleagues had used the Schick test on more than 52,000 New York City schoolchildren.’
Early 20th century named after Bela Schick (1877–1967), Hungarian-born American pediatrician.
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