Ancylostoma Ceylanicum: a Parasite of Man in Calcutta and Environs

A. B. ChowdhuryCalcutta School of Tropical Medicine and the Johns Hopkins University Center for Medical Research and Training, Calcutta

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G. A. SchadCalcutta School of Tropical Medicine and the Johns Hopkins University Center for Medical Research and Training, Calcutta

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Sixteen of 183 persons (8.7%) of a predominantly rural sample population (175 from a village 40 miles north of Calcutta and 8 from the city) harbored Ancylostoma ceylanicum. In all but one instance this species occurred concurrently with both Necator americanus and A. duodenale; in the remaining case it was recovered with the latter only. A. ceylanicum constituted 0.1% of all the hookworms recovered, and even in the 16 persons infected with this species it accounted for only 1.3% of the worms. In only one of these infections were both sexes represented.

Author Notes

Division of Parasitology, Calcutta School of Tropical Medicine, Calcutta 12, India.

Department of Pathobiology, School of Hygiene and Public Health, The Johns Hopkins University, 615 North Wolfe Street, Baltimore, Maryland 21205.

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