occurrence of positivity for trypanosoma cruzi in triatomine from municipalities in southeastern brazil, from 2002 to 2004 ocorrência e positividade para trypanosoma cruzi em triatomíneos de municípios da região sudeste do brasil, de 2002 a 2004

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ID: 174495
2010
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Abstract
INTRODUCTION: from an epidemiological point of view, more than 120 species of triatomine (Hemiptera, Reduviidae) are known. The occurrence and positivity for Trypanosoma cruzi in triatomines in 16 municipalities of the Triângulo Mineiro and Alto Paranaíba were evaluated from January 2002 to December 2004. METHODS: the triatomines were captured basically according to the classic norms of the National Health Foundation. The parasitological exams of the triatomines were conducted according to the technique described by the Ministry of Health. During the study period, 990 specimens of triatomines were captured and of these, 771 could be examined. RESULTS: five species were identified: Triatoma sordida, Panstrongylus diasi, Panstrongylus megistus, Panstrongylus geniculatus and Rhodnius neglectus. Triatoma sordida represented 71.5% of all the triatomines captured, followed by Panstrongylus megistus (18%), Rhodnius neglectus (9.3%), Panstrongylus diasi (0.8%) and Panstrongylus geniculatus (0.4%). Of the total number of triatomines examined, 2.7% were positive for Trypanosoma cruzi. Panstrongylus megistus was the species that presented the highest rates of infection by Trypanosoma cruzi (8.3%), followed by Rhodnius neglectus (2.9%) and Triatoma sordida (1.4%). CONCLUSIONS: there is a need to adapt to new circumstances in epidemiology, with greater emphasis on entomological surveillance, since the potential for adaptation of secondary species of triatomines exists, especially where Chagas' disease is already under control.
INTRODUÇÃO: do ponto de vista epidemiológico mais de 120 espécies de triatomíneos (Hemiptera, Reduviidae) são conhecidas. A ocorrência e a positividade de Trypanosoma cruzi em triatomíneos de 16 municípios do Triângulo Mineiro e Alto Paranaíba foram avaliadas de janeiro de 2002 a dezembro de 2004. MÉTODOS: os triatomíneos foram capturados seguindo basicamente as normas clássicas da Fundação Nacional de Saúde. Os exames parasitológicos dos triatomíneos foram conduzidos de acordo com a técnica descrita pelo Ministério da Saúde. Durante o período de estudo, foram capturados 990 exemplares de triatomíneos, sendo que 771 dos capturados estavam em condições de serem examinados. RESULTADOS: cinco espécies foram identificadas: Triatoma sordida, Panstrongylus diasi, Panstrongylus megistus, Panstrongylus geniculatus e Rhodnius neglectus. Triatoma sordida representou 71,5% de todos os triatomíneos capturados, seguido por Panstrongylus megistus (18%), Rhodnius neglectus (9,3%), Panstrongylus diasi (0,8%) e Panstrongylus geniculatus (0,4%). Dos triatomíneos examinados, 2,7% foram positivos para Trypanosoma cruzi. Panstrongylus megistus foi a espécie que apresentou a maior taxa de infecção por Trypanosoma cruzi (8,3%), seguida pelo Rhodnius neglectus (2,9%) e Triatoma sordida (1,4%). CONCLUSÕES: há necessidade de se adequar às novas circunstâncias epidemiológicas com ênfase na vigilância entomológica, uma vez que o potencial de adaptação de espécies secundárias de triatomíneos, em áreas onde a doença de Chagas está controlada, é uma preocupação.
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Authors ;Márcia Beatriz Cardoso de Paula;Idessânia Nazareth da Costa;Paula de Albuquerque Freitas;Jean Ezequiel Limongi;Adalberto de Albuquerque Pajuaba Neto;Rogério de Melo Costa Pinto;Ana Lúcia Ribeiro Gonçalves;Julia Maria Costa-Cruz
Journal mobile information systems
Year 2010
DOI
10.1590/S0037-86822010000100003
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822010000100003
Keywords
Epidemiology brasil trypanosoma cruzi epidemiología tropical medicine brazilarctic medicine

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