A Parasitologic Survey for Mansonella Ozzardi in the Comisaría Del Vaupés, Colombia

L. K. Lightner Tulane University International Center for Medical Research (CIDEIM), Department of Microbiology, University of Texas Medical Branch, Instituto Nacional de Salud de Colombia (INS), Cali, Colombia

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A. Ewert Tulane University International Center for Medical Research (CIDEIM), Department of Microbiology, University of Texas Medical Branch, Instituto Nacional de Salud de Colombia (INS), Cali, Colombia

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A. Corredor Tulane University International Center for Medical Research (CIDEIM), Department of Microbiology, University of Texas Medical Branch, Instituto Nacional de Salud de Colombia (INS), Cali, Colombia

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E. Sabogal Tulane University International Center for Medical Research (CIDEIM), Department of Microbiology, University of Texas Medical Branch, Instituto Nacional de Salud de Colombia (INS), Cali, Colombia

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The prevalence of Mansonella ozzardi in the Comisaría del Vaupés of eastern Colombia was investigated as part of an extensive study of human filariasis in Colombia. Three hundred and forty-seven individuals from various parts of Vaupés were examined. The overall infection rate for M. ozzardi was 49%, but the distribution of the parasite was not uniform throughout the Comisaría. Microfilariae were found in both venous blood samples and skin biopsies of infected individuals. The rate of infection was 55% for males and 42% for females, and infection rates tended to increase with age. Microfilarial levels in 20 mm3 thick blood films were generally low, with 88% of the positive films having less than 50 microfilariae.

Author Notes

Present address: Division of Experimental Therapeutics, Department of Parasitology, Walter Reed Army Institute of Research, WRAMC, Washington, D.C. 20012.

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