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October 6, 1945


JAMA. 1945;129(6):477. doi:10.1001/jama.1945.02860400061020

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To the Editor:—  In The Journal, August 11, Wright and Gold referred to Ancylostoma braziliense as "a hitherto unreported etiologic factor in the production of Loeffler's syndrome." No descriptions are made of the nematodes involved in their series of cases, but no mention is made of their having ruled out Necator americanus and/or Ancylostoma duodenale as the etiologic agent. Nor was mention made of the details of the stool examinations performed.According to Belding (Textbook of Clinical Parasitology, New York, D. Appleton-Century Company, 1942, p. 292) "ground itch or hookworm dermatitis caused by the [hookworm] larvae in the skin is most prevalent... in the spring and summer months in the Southern United States." It is also well known that the latter nematodes pass through the pulmonary alveoli in the course of their intrahuman development and migration. Hence it appears that it has not been proved that the cases reported by

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