Laboratório Central de Saúde Pública, Secretaria Estadual de Saúde do Estado de Pernambuco, Recife, PE.
Rev Soc Bras Med Trop. 2012 Feb;45(1):60-5. doi: 10.1590/s0037-86822012000100012.
The present study shows a descriptive analysis of triatomine occurrence and its natural Trypanosoma infection rates in the state of Pernambuco, Brazil, between 2006 and 2007.
Entomological data for the species, such as specimens captured in both intra and peridomiciles and natural infection index, were obtained via domiciliary capture in 147 municipalities from 11 Regional Managements of Health. The database was obtained from a sample of insects (100% infected and 20% non-infected) sent to the Central Laboratory of Pernambuco.
A total of 18,029 triatomines were analyzed from 138 municipalities of the state. Triatoma pseudomaculata (35%), Triatoma brasiliensis (34%), and Panstrongylus lutzi (25%) were the most captured species. These species also showed a widespread geographical distribution in the state. Panstrongylus megistus, Triatoma petrocchiae, Triatoma melanocephala, Triatoma sordida, Rhodnius nasutus, Rhodnius neglectus, and Triatoma infestans showed more limited geographical distribution and lower relative abundance. The parasitological research showed that 8.8% of the triatomines were naturally infected with flagellates morphologically similar to Trypanosoma cruzi and 91.3% of them were captured inside houses in 113 municipalities. P. lutzi showed the highest rates of natural infection.
After the control of T. infestans, synanthropic species, such as T. brasiliensis, T. pseudomaculata, and P. lutzi, maintain the risk of T. cruzi transmission to humans in the state of Pernambuco. These species are widely distributed, and infected specimens have been found inside houses. Thus, an enhanced surveillance and vector control of Chagas disease is recommended in Pernambuco.
本研究对 2006 年至 2007 年间巴西伯南布哥州的三种锥虫发生情况及其自然感染率进行了描述性分析。
通过 11 个区域卫生管理局在 147 个城市进行的家庭捕获，获得了有关该物种的昆虫学数据，例如在室内和周围捕获的标本以及自然感染指数。数据库是从送往伯南布哥中央实验室的昆虫样本（100%感染和 20%非感染）中获得的。
共分析了来自该州 138 个城市的 18029 只锥虫。捕获最多的物种是 T. pseudomaculata（35%）、T. brasiliensis（34%）和 P. lutzi（25%）。这些物种在该州也具有广泛的地理分布。P. megistus、T. petrocchiae、T. melanocephala、T. sordida、R. nasutus、R. neglectus 和 T. infestans 的地理分布范围较窄，相对丰度较低。寄生虫学研究表明，8.8%的锥虫自然感染了形态上类似于克氏锥虫的鞭毛体，其中 91.3%在 113 个城市的室内捕获。P. lutzi 的自然感染率最高。
在控制 T. infestans 之后，诸如 T. brasiliensis、T. pseudomaculata 和 P. lutzi 等与人共生的物种在伯南布哥州仍保持着传播克氏锥虫给人类的风险。这些物种分布广泛，在室内发现了感染标本。因此，建议在伯南布哥州加强对恰加斯病的监测和病媒控制。
