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The too frequent prevalence of ringworm and the importance of its prophylaxis have induced me to offer the following observations and suggestions, hoping that they will emphasize one or more points as to the etiology of this inconvenient disorder.
The disease is always produced by the trichophyton. White of Boston has called especial attention to the frequency of its origin in the barber shop, a fact which common experience verifies. But how does it get there? All authors say, from the domestic animals, viz., dog, cat, horse, white mice, to man. In the stock-raising districts I think the most frequent source is from cattle, and especially from yearling calves. I say yearlings, because I do not think older cattle as good soil for the production of the parasite. The farmers handle their stock, become infected, go to the barber shop and get shaved, and the next person to take the
KESSLER JB. TRICHOPHYTOSIS. JAMA. 1902;XXXIX(17):1050–1051. doi:10.1001/jama.1902.52480430032001i
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