Onchocerciasis in Guatemala

I. Epidemiological Studies of Microfilaruria

Louis E. Fazen Department of Epidemiology, The Johns Hopkins University, School of Hygiene and Public Health, Onchocerciasis Section, Division of Epidemiology, General Directorate of Health Services, 615 North Wolfe Street, Baltimore, Maryland 21205, Guatemala

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Robert I. Anderson Department of Epidemiology, The Johns Hopkins University, School of Hygiene and Public Health, Onchocerciasis Section, Division of Epidemiology, General Directorate of Health Services, 615 North Wolfe Street, Baltimore, Maryland 21205, Guatemala

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Horacio Figueroa Marroquín Department of Epidemiology, The Johns Hopkins University, School of Hygiene and Public Health, Onchocerciasis Section, Division of Epidemiology, General Directorate of Health Services, 615 North Wolfe Street, Baltimore, Maryland 21205, Guatemala

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Federico G. Arthes Department of Epidemiology, The Johns Hopkins University, School of Hygiene and Public Health, Onchocerciasis Section, Division of Epidemiology, General Directorate of Health Services, 615 North Wolfe Street, Baltimore, Maryland 21205, Guatemala

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Alfred A. Buck Department of Epidemiology, The Johns Hopkins University, School of Hygiene and Public Health, Onchocerciasis Section, Division of Epidemiology, General Directorate of Health Services, 615 North Wolfe Street, Baltimore, Maryland 21205, Guatemala

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DOI:
https://doi.org/10.4269/ajtmh.1975.24.52
Volume/Issue:
Volume 24: Issue 1
Page(s):
52–57
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Microfilariae of Onchocerca volvulus were detected in the urine of 65 residents of three coffee plantations near Yepocapa, Guatemala. In this area the prevalence of microfilaruria is estimated to be between 17% and 30% of the population 10 years of age and older. Almost all of the people examined had clinical manifestations of onchocerciasis and 80% of them had microfilariae in skin snips. The frequency of microfilaruria is associated with the number of microfilariae in the skin. Within each age group those who had lived longer on the coffee plantations were more likely to have microfilariae in a skin snip and more likely to have microfilariae in their urine. The presence of subcutaneous nodules or history of prior nodulectomy did not reduce the incidence of microfilaruria nor did the presence of subcutaneous nodules increase the incidence of microfilariae in the urine.

Author Notes

Copyright:
Copyright © 1975, by The American Society of Tropical Medicine and Hygiene 1975
Accepted:
15 Apr 1974
|
Published Online:
Jan 1975
Cover The American Journal of Tropical Medicine and Hygiene
The American Journal of Tropical Medicine and Hygiene
Print ISSN:
0002-9637

Expert Committee on Hepatitis

First Report. World Health Organization Technical Report Series No. 62 (Available also in French). 26 pp. Geneva, W.H.O., Palais des Nations. March, 1953. Price 1/6, $0.20, Fr. fr. 65.-; Sw. fr. 0.80

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