Editing Scarlet fever (section)

=== The Dick test ===
The Dick test, developed in 1924 by [[George F. Dick]] and [[Gladys Dick]], was used to identify those susceptible to scarlet fever.<ref name=Dick1924>{{cite journal |last1=Dick |first1=G. F. |first2=G. H. |last2=Dick |year=1924 |title=A skin test for susceptibility to scarlet fever |journal= Journal of the American Medical Association|volume=82 |issue=4 |pages=265–266 |doi=10.1001/jama.1924.02650300011003 }}</ref> The Dick test involved injecting a diluted strain of the streptococci known to cause scarlet fever; a reaction in the skin at the injection site identified people susceptible to developing scarlet fever. The reaction could be seen four hours after the injection, but was more noticeable after 24 hours. If no reaction was seen in the skin, then the person was assumed not to be at risk from the disease, having developed immunity to it.<ref>{{Cite journal|last1=Claude|first1=B|last2=McCartney|first2=J.E.|last3=McGarrity|first3=J.|date=January 1925|title=The Dick test for susceptibility to scarlet fever|journal=The Lancet|volume=205|issue=5292|pages=230–231|doi=10.1016/S0140-6736(00)56009-7}}</ref>

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File:Über die Nierenveränderungen bei Scharlach (1891).jpg|[[Otto Kalischer]] wrote a doctoral thesis on scarlet fever in 1891.
File:Poster - "Regulation of the Milk Supply" (FDA 178) (8211297109).jpg|A 1930s American poster attempting to curb the spread of such diseases as scarlet fever by regulating milk supply
File:Gladys Rowena Henry Dick (1881-1963).jpg|[[Gladys Henry Dick]] ''(pictured)'' and [[George Frederick Dick]] developed an [[antitoxin]] and vaccine for scarlet fever in 1924 which were later eclipsed by penicillin in the 1940s.
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