Development of Different Strains of Plasmodium Vivax in Two Species of Anopheles

William E. Collins Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, U. S. Department of Health, Education, and Welfare, Bethesda, Maryland 20014

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Peter G. Contacos Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, U. S. Department of Health, Education, and Welfare, Bethesda, Maryland 20014

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Bettye B. Richardson Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, U. S. Department of Health, Education, and Welfare, Bethesda, Maryland 20014

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Jimmie C. Skinner Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, U. S. Department of Health, Education, and Welfare, Bethesda, Maryland 20014

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Anopheles freeborni mosquitoes with oocyst infections had salivary gland infections at a higher rate with strains of Plasmodium vivax from the New World than with strains from Asia, particularly those from South Vietnam. Anopheles maculatus mosquitoes supported development from oocysts to heavily infected salivary glands for all the strains of P. vivax tested. The results suggest that P. vivax introduced from Vietnam would be less likely to be transmitted by native A. freeborni mosquitoes than would malaria from some other areas.

Author Notes

Present address: Vector Biology and Control Division, Bureau of Tropical Diseases, Center for Disease Control, Atlanta, Georgia 30333.

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