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The Schick test, invented between 1910 and 1911 is a test used to determine whether or not a person is susceptible to diphtheria. It was named after its inventor, Béla Schick (1877–1967), a Hungarian-born American pediatrician. The test is a simple procedure. A small amount (0.1 ml) of diluted (1/50 MLD) diphtheria toxin is injected intradermally into the arm of the person. If a person does not have enough antibodies to fight it off, the skin around the injection will become red and swollen, indicating a positive result. This swelling disappears after a few days. If the person has an immunity, then little or no swelling and redness will occur, indicating a negative result. Results can be interpreted as: # Positive: when the test results in a wheal of 5–10 mm diameter # Pseudo-positive: when there is only a red colored inflammation and it disappears rapidly # Negative reaction: # pseudo negative reaction: The test was created when immunizing agents were scarce and not very safe, however as newer and safer toxoids were made available there was no more requirement for susceptibility tests. ==References== 〔 * ''Taber's Cyclopedic Medical Dictionary'', 20th Ed. (2005). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Schick test」の詳細全文を読む スポンサード リンク
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