Plasmodium falciparum Infection Rates in Anopheles gambiae, An. arabiensis, and An. Funestus in Western Kenya

Katherine A. Taylor Center for Infectious Diseases, Centers for Disease Control, Clinical Research Center, Kenya Medical Research Institute, U.S. Army Medical Research Unit, Atlanta, Georgia

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Joseph K. Koros Center for Infectious Diseases, Centers for Disease Control, Clinical Research Center, Kenya Medical Research Institute, U.S. Army Medical Research Unit, Atlanta, Georgia

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Joseph Nduati Center for Infectious Diseases, Centers for Disease Control, Clinical Research Center, Kenya Medical Research Institute, U.S. Army Medical Research Unit, Atlanta, Georgia

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Robert S. Copeland Center for Infectious Diseases, Centers for Disease Control, Clinical Research Center, Kenya Medical Research Institute, U.S. Army Medical Research Unit, Atlanta, Georgia

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Frank H. Collins Center for Infectious Diseases, Centers for Disease Control, Clinical Research Center, Kenya Medical Research Institute, U.S. Army Medical Research Unit, Atlanta, Georgia

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A. David Brandling-Bennett Center for Infectious Diseases, Centers for Disease Control, Clinical Research Center, Kenya Medical Research Institute, U.S. Army Medical Research Unit, Atlanta, Georgia

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DOI:
https://doi.org/10.4269/ajtmh.1990.43.124
Volume/Issue:
Volume 43: Issue 2
Page(s):
124–129
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Mosquitoes collected monthly for 1 year from human habitations in the Kisumu area of western Kenya were identified by morphological characters as Anopheles gambiae Giles sensu lato (An. gambiae s.l.) or An. funestus. Of the mosquitoes collected, 7,244 (67%) of the An. gambiae s.l. and 8,511 (87%) of the An. funestus were tested by enzyme-linked immunosorbent assay (ELISA) for the presence of Plasmodium falciparum circumsporozoite (CS) protein. ELISA positivity rates were 8.2% for An. gambiae s.l. and 6.1% for An. funestus. Both An. gambiae and An. arabiensis were detected among 432 ELISA-positive and 668 ELISA-negative An. gambiae s.l. identified to species with a ribosomal DNA probe. The species-specific infection rates were calculated to be 9.6% for An. gambiae and 0.4% for An. arabiensis. These results confirm that An. gambiae and An. funestus are the primary malaria vectors in western Kenya and that An. arabiensis is a relatively minor vector.

Author Notes

Copyright:
Copyright © 1990 by The American Society of Tropical Medicine and Hygiene 1990
Published Online:
Aug 1990
Cover The American Journal of Tropical Medicine and Hygiene
The American Journal of Tropical Medicine and Hygiene
Print ISSN:
0002-9637
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