HUMAN TRYPANOSOMIASIS CAUSED BY TRYPANOSOMA EVANSI IN A VILLAGE IN INDIA: PRELIMINARY SEROLOGIC SURVEY OF THE LOCAL POPULATION

VIJAY R. SHEGOKAR Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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RAJARAM M. POWAR Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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PRASHANT P. JOSHI Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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ARADHANA BHARGAVA Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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VIBHAWARI S. DANI Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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RAVINDRA KATTI Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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VASANT R. ZARE Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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VITHHALRAO D. KHANANDE Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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JEAN JANNIN Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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PHILIPPE TRUC Department of Microbiology, and Department of Medicine, Government Medical College, Nagpur, India; Directorate General of Health Services, Mumbai, India; Innovative and Intensified Disease Management, Neglected Tropical Diseases Control, Communicable Diseases, World Health Organization, Geneva, Switzerland; Unité de Recherche 117 Trypanosomoses Africaines, Institut de Recherche pour le Développement, Luanda, Angola

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After discovery of the first recorded case of human infection with Trypanosoma evansi, serologic screening of 1,806 persons from the village of origin of the patient in India was performed using the card agglutination test for trypanosomiasis and T. evansi. A total of 410 (22.7%) people were positive by whole blood, but only 81 were confirmed positive by serum. However, no trypanosomes were detected in the blood of 60 people who were positive at a high serum dilution. The results probably indicate frequent exposure of the human population to T. evansi in the study area, which suggests frequent vector transmission of parasites to humans. Although T. evansi is not infective for humans, a follow-up of seropositive persons is required to observe the evolution of human infection with this parasite.

Author Notes

Reprint requests: Philippe Truc, Institut de Recherche pour le Développement, Unité de Recherche 117 Trypanosomoses Africaines, Ambassade de France, CP 584, Luanda, Angola.
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