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首页> 外文期刊>The American Journal of Tropical Medicine and Hygiene >Trypanosoma cruzi (Agent of Chagas Disease) in Sympatric Human and Dog Populations in 'Colonias' of the Lower Rio Grande Valley of Texas
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Trypanosoma cruzi (Agent of Chagas Disease) in Sympatric Human and Dog Populations in 'Colonias' of the Lower Rio Grande Valley of Texas

机译：德克萨斯州下拉里奥格兰谷的“殖民地”中的Sympatric人和狗群体的锥虫瘤Cruzi（Chagas病剂）

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Abstract. The zoonotic, vector-borne parasite Trypanosoma cruzi causes Chagas disease throughout the Americas, but human and veterinary health burdens in the United States are unknown. We conducted a cross-sectional prevalence study in indigent, medically underserved human and cohabiting canine populations of seven south Texas border communities, known as colonias. Defining positivity as those samples that were positive on two or more independent tests, we found 1.3% seroprevalence in 233 humans, including one child born in the United States with only short-duration travel to Mexico. Additionally, a single child with no travel outside south Texas was positive on only a single test. Among 209 dogs, seroprevalence was 19.6%, but adjusted to 31.6% when including those dogs positive on only one test and extrapolating potential false negatives. Parasite DNA was detected in five dogs, indicating potential parasitemia. Seropositive dogs lived in all sampled colonias with no difference in odds of positivity across age, sex, or breed. Colonia residents collected two adult Triatoma gerstaeckeri and one nymph triatomine from around their homes; one of three bugs was infected with T. cruzi, and blood meal hosts were molec-ularly determined to include dog, human, and raccoon. Dogs and the infected vector all harbored T. cruzi discrete typing unit I, which has previously been implicated in human disease in the United States. Colonias harbor active T. cruzi transmission cycles and should be a priority in outreach and vector control initiatives.
机译：抽象的。载体传播的寄生虫胰蛋白酶瘤Cruzi导致整个美洲的Chagas病，但美国的人类和兽医卫生负担都未知。我们在贫困，医学方面的人类和同居的七南德克萨斯州边境社区的历史普及，称为Colonias。将积极性定义为两种或多个独立测试的样品，我们发现了233人的1.3％Seroprevalence，其中包括在美国出生的一个孩子，只有短期到墨西哥。此外，南德克萨斯境外没有旅行的单个孩子在单一的测试中是积极的。在209只狗中，Seroprevalence是19.6％，但在仅在一次测试和外推潜在的假阴性中阳性时调整为31.6％。在五只狗中检测到寄生虫DNA，表明潜在的寄生虫。血清阳性犬在所有采样的殖民地生活，患有年龄，性别或品种的阳性的几率没有差异。 Colonia居民收集了两名成人Triatoma Gerstaeckeri和来自家园的一个若虫三角虫;有三个虫子被感染T. Cruzi，血膳宿主被分子般的决定包括狗，人和浣熊。狗和受感染的传染媒介都是哈密德的T.Cruzi离散打字单元I，以前涉及美国人类疾病。 Colonias Harbour Active T. Cruzi传输周期，应该是外联和矢量控制举措的优先事项。

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