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Predisposition to Hookworm Infection in Humans
G. A. Schad and R. M. Anderson
New Series, Vol. 228, No. 4707 (Jun. 28, 1985), pp. 1537-1540
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1695553
Page Count: 4
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Frequency distributions of parasitic helminths within human communities are invariably highly aggregated, the majority of worms occurring in relatively small fractions of the host populations. It has been suggested that the heavily infected individuals are predisposed to this state, not by chance, but by as yet undefined genetic, ecological, behavioral, or social factors. Analyses of individual post-treatment patterns of hookworm reinfection among 112 villagers in an endemic area of West Bengal provide quantitative evidence of predisposition to heavy infection. This observation has implications for the design of control programs based on chemotherapy because of the potential economic advantage of selective or targeted treatment as opposed to mass or blanket treatment.
Science © 1985 American Association for the Advancement of Science