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    Fine-scale predictions of distributions of Chagas disease vectors in the state of Guanajuato, Mexico

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    atp.jme.fine-scale_predictions_of_distributions.2005.pdf (3.289Mb)
    Issue Date
    2005-11
    Author
    López-Cátdenas, Jorge
    Gonzalez-Bravo, Francisco Ernesto
    Salazar-Schettino, Paz Maria
    Gallaga-Solorzano, Juan Carlos
    Ramírez-Barba, Ector
    Martinez-Mendez, Joel
    Sánchez-Cordero, Víctor
    Peterson, A. Townsend
    Ramsey, Janine M.
    Publisher
    Entomological Society of America
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    One of the most daunting challenges for Chagas disease surveillance and control in Mexico is the lack of community level data on vector distributions. Although many states now have assembled representative domestic triatomine collections, only two triatomine specimens had been collected and reported previously from the state of Guanajuato. Field personnel from the stateÕs Secretarõ´a de Salud conducted health promotion activities in 43 of the 46 counties in the state and received donations of a total of 2,522 triatomine specimens between 1998 and 2002. All specimens were identiÞed, and live insects examined for Trypanosoma cruzi. In an effort to develop Þne-scale distributional data for Guanajuato, collection localities were georeferenced and ecological niches were modeled for each species by using evolutionary-computing approaches. Five species were collected: Triatoma mexicana (Herrich-Schaeffer), Triatoma longipennis (Usinger), Triatoma pallidipennis (Stål), Triatoma barberi (Usinger), and Triatoma dimidiata (Latreille) from 201 communities located at elevations of 870Ð2,200 m. Based on collection success, T. mexicana had the broadest dispersion, although niche mapping indicates that T. barberi represents the greatest risk for transmission of Chagas disease in the state. T. dimidiata was represented in collections by a single adult collected from one village outside the predicted area for all species. For humans, an estimated 3,755,380 individuals are at risk for vector transmission in the state, with an incidence of 3,500 new cases per year; overall seroprevalences of 2.6% indicate that 97,640 individuals are infected with T. cruzi at present, including 29,300 chronic cases.
    URI
    http://hdl.handle.net/1808/6574
    DOI
    https://doi.org/10.1093/jmedent/42.6.1068
    Collections
    • Biodiversity Institute & Natural History Museum Scholarly Works [311]
    • Center for Latin American and Caribbean Studies Scholarly Works [736]
    • Distinguished Professors Scholarly Works [918]
    • Ecology & Evolutionary Biology Scholarly Works [1558]
    • Kansas African Studies Center Scholarly Works [272]
    Citation
    López-Cárdenas, J., F. E. González-Bravo, P. M. Salazar-Schettino, J. C. Gallaga-Solórzano, E. Ramírez-Barba, J. Martínez-Méndez, V. Sánchez-Cordero, A. T. Peterson, and J. M. Ramsey. 2005. Fine-scale predictions of distributions of Chagas disease vectors in the state of Guanajuato, Mexico. Journal of Medical Entomology 42:1068-1081. https://doi.org/10.1093/jmedent/42.6.1068

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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