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Am. J. Trop. Med. Hyg., 20(4), 1971, pp. 592-597
Copyright © 1971 by The American Society of Tropical Medicine and Hygiene

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Endemic Filariasis in Thakurgaon, East Pakistan*

Cornelius Barry{dagger}, Abbasuddin Ahmed AND Abdul Quadir Khan
Pakistan Medical Research Center and Malaria Institute of Pakistan, Mohakhali, Dacca 12, East Pakistan

Thakurgaon, an area of 645 km2 in Dinajpur District of East Pakistan, was surveyed to determine the prevalence and distribution of human filariasis. Enumeration of microfilariae and clinical manifestations was obtained from peripheral blood smears and physical examinations of 9,624 inhabitants. The microfilaria rate of 16.8% represented infection by Wuchereria bancrofti of nocturnal periodicity. The clinical manifestation rate of 10.1% consisted primarily of genital hydrocele and elephantiasis of the scrotum in the male population. Lymphedema and elephantiasis of the limbs were rarely observed in either sex. Microfilaria infection and clinical manifestation rates increased with ascending age group. An endemicity rate of 24.2%, and a median microfilaria density of 14.0 microfilariae per 20 mm3 of peripheral blood, indicated a moderately endemic focus of filariasis that serves as a reservoir of infection and constitutes a significant public health problem in Thakurgaon.

Accepted for publication February 8, 1971.


* This investigation was conducted jointly by the Pakistan Medical Research Center, Dacca Division, as part of the University of Maryland International Center for Medical Research and Training Program, and the Malaria Institute of Pakistan, Ministry of Health, Government of Pakistan, and was supported in part by Grant No. TW00142 from the National Institutes of Health, Bethesda, Maryland 20014.


{dagger} Present address: Institute of International Medicine, School of Medicine, University of Maryland, Baltimore, Maryland 21201.






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Copyright © 1971 by the American Society of Tropical Medicine and Hygiene.