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—The period of activity of infection in scarlet fever is discussed by Dr. Arthur White-legge in the Lancet, and he alleges that there is a sudden decrease in the infectivity about the sixth day, which is restored about the twelfth.
The Active Period of Infection in Scarlet Fever. JAMA. 1889;XII(4):128. doi:10.1001/jama.1889.02400810020005
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