Fine-scale predictions of distributions of Chagas disease vectors in the state of Guanajuato, Mexico.
Fine-scale predictions of distributions of Chagas disease vectors in the state of Guanajuato, Mexico.
复制标题
墨西哥瓜纳华托州恰加斯病媒介分布的精细预测。
DOI：
10.1093/jmedent/42.6.1068
复制
发表时间：
2005
影响因子：
2.1
通讯作者：
J. Ramsey
中科院分区：
文献类型：
--
作者：
Jorge López;Francisco Ernesto Gonzalez Bravo;P. M. Salazar Schettino;Juan Carlos Gallaga Solorzano;E. R. Ramírez Barba;Joel Martinez Mendez;V. Sánchez‐Cordero;A. Peterson;J. Ramsey
墨西哥南美锥虫病监测和控制面临的最严峻挑战之一是缺乏社区一级的病媒分布数据。虽然许多州现在已经收集了代表性的国内锥蝽标本，但以前在瓜纳华托州只收集和报告了两个锥蝽标本。1998年至2002年，该州卫生秘书处的实地工作人员在该州46个县中的43个县开展了健康促进活动，并收到了总共2 522份锥蝽标本的捐赠。对所有标本进行了鉴定，并对活虫进行了克氏锥虫检查。在努力开发精细规模的分布数据为瓜纳华托，收集地点进行地理参考和生态位建模，为每个物种通过使用进化计算方法。共采集到5个物种：Triatoma mexicana（Herrich-Schaeffer）、Triatoma longipennis（Usinger）、Triatoma pallidipennis（Stål）、Triatoma barberi（Usinger）和Triatoma dimidiata（Latreille）来自海拔870- 2，200 m的201个群落。在收集成功的基础上，T. mexicana的分布最广，但生态位作图表明T.巴贝里是该州南美锥虫病传播的最大风险。T.在所有物种的预测区域之外的一个村庄收集的一只成年个体代表了dimidiata。对于人类，估计有3，755，380人在该州有媒介传播的风险，每年有3，500例新病例; 2.6%的总体血清阳性率表明97，640人感染了T。cruzi目前，包括29，300例慢性病例。
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 state's Secretaría 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 identified, and live insects examined for Trypanosoma cruzi. In an effort to develop fine-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 870-2,200 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.