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Am. J. Trop. Med. Hyg., 1(4), 1952, pp. 612-617
Copyright © 1952 by The American Society of Tropical Medicine and Hygiene

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The Infection of Mosquitoes by Plasmodium Vivax (Chesson Strain) during the Early Primary Parasitemias

Geoffrey M. Jeffery1
National Institutes of Health, Laboratory of Tropical Diseases, Milledgeville, Georgia

Complete mosquito feedings were done on 24 patients with early primary parasitemias of Plasmodium vivax (Chesson strain). The average infection produced infected mosquitoes on the fourth day of demonstrable parasites, two days before gametocytes could be discovered by normal examination of blood smears, two days following the onset of fever (100°F. or above), and about one day previous to the first fever of 104°F. or more.

It is concluded that these early parasitemias may be of epidemiological importance, in that, even in endemic areas where good therapeutic measures are available, the primary attack would provide a reservoir for mosquito infection before it could be terminated or suppressed. In indigenous populations of endemic areas it would be unusual for the naturally acquired vivax infection to be terminated or suppressed before the infected individual became a potential source of mosquito infections.


1 The author wishes to express his appreciation to the staff of the Milledgeville State Hospital for the cooperation which made this study possible.




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W. E. Collins, J. S. Sullivan, G. M. Jeffery, A. Williams, G. G. Galland, D. Nace, T. Williams, and J. W. Barnwell
The Chesson Strain of Plasmodium vivax in Humans and Different Species of Aotus Monkeys
Am J Trop Med Hyg, January 1, 2009; 80(1): 152 - 159.
[Abstract] [Full Text] [PDF]


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Copyright © 1952 by the American Society of Tropical Medicine and Hygiene.