A Prospective Study of the Effects of Ultralow Volume (ULV) Aerial Application of Malathion on Epidemic Plasmodium falciparum Malaria

II. Entomologic and Operational Aspects

R. T. Taylor Bureau of Tropical Diseases, Center for Disease Control, Public Health Service, U. S. Department of Health, Education and Welfare, Service National d'Eradication de la Malaria, Atlanta, Georgia 30333, Haiti

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Marc Solis Bureau of Tropical Diseases, Center for Disease Control, Public Health Service, U. S. Department of Health, Education and Welfare, Service National d'Eradication de la Malaria, Atlanta, Georgia 30333, Haiti

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David B. Weathers Bureau of Tropical Diseases, Center for Disease Control, Public Health Service, U. S. Department of Health, Education and Welfare, Service National d'Eradication de la Malaria, Atlanta, Georgia 30333, Haiti

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John W. Taylor Bureau of Tropical Diseases, Center for Disease Control, Public Health Service, U. S. Department of Health, Education and Welfare, Service National d'Eradication de la Malaria, Atlanta, Georgia 30333, Haiti

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DOI:
https://doi.org/10.4269/ajtmh.1975.24.188
Volume/Issue:
Volume 24: Issue 2
Page(s):
188–192
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In a large-scale study in the Miragoane Valley of Haiti, designed to test the effects of aerial ultralow volume (ULV) malathion on epidemic Plasmodium falciparum malaria, spray operations resulted in an immediate and sharp decline in numbers of the vector, Anopheles albimanus. The adult population of this mosquito remained at <1% of previous levels until several weeks after a 50-day spray period (27 October-16 December 1972) during which six cycles were completed. The study area offered ideal conditions of wind, temperature, humidity, and mountain barriers. Mosquitoes in the area were highly susceptible to malathion. Results indicated that aerial ULV treatment with malathion can reduce A. albimanus populations rapidly and effectively when applications are made over an area as large as 20,000 acres. Preliminary results showed that effective control was not achieved in areas one-quarter that size; these areas were not sufficiently large, infiltration of mosquitoes from adjacent untreated areas was possible.

Author Notes

Copyright:
Copyright © 1975 by The American Society of Tropical Medicine and Hygiene 1975
Accepted:
13 Jul 1974
|
Published Online:
Mar 1975
Cover The American Journal of Tropical Medicine and Hygiene
The American Journal of Tropical Medicine and Hygiene
Print ISSN:
0002-9637

Diagnostic Procedures and Reagents

Technics for the Laboratory Diagnosis and Control of the Communicable Diseases, American Public Health Association, Ed., pp. v plus 589, 6 plates in color, cloth, New York, Am. Pub. Health Assoc. Inc., 1950, $6.00

An Introduction to Medical Protozoology

With Chapters on the Spirochaetes and on Laboratory Methods. By Robert Knowles, B.A., M.R.C.S., L.R.C.P., Lt. Col., Indian Medical Service, Calcutta. Thacker, Spink and Company. 1928. Pages I–XII, 1–887

Author:
Chas. F. Craig
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