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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060 EISSN: 1678-8060
Vol. 96, No. 4, 2001, pp. 473-477
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Bioline Code: oc01072
Full paper language: English
Document type: Research Article
Document available free of charge
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Memórias do Instituto Oswaldo Cruz, Vol. 96, No. 4, 2001, pp. 473-477
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Triatoma infestans in Greater Buenos Aires, Argentina
P Gajate; S Pietrokovsky; L Abramo Orrego; O Pérez; A Monte; J Belmonte & C Wisnivesky-Colli
Abstract
The Health Administration Agencies of many municipalities in Greater Buenos Aires (GBA) receive frequent
reports on triatomines in houses. The aim of this work was to identify and describe the dispersal foci of
Triatoma infestans in an urban neighborhood of GBA, and contribute to the knowledge of the epidemiological
situation in the region. In June 1998, potentially infested places were entomologically evaluated. T. infestans was only detected in a hen building for egg production, which housed approximately 6,000 birds. A total of 2,930 insects were collected. Density was about 9 triatomines/m2. The proportions of fifth instar nymphs and adults were significantly higher than those of the other stages (p<0.001). The number of triatomines collected largely exceeded the highest domestic infestation found in one house from rural endemic areas of Argentina. Though triatomines were negative for Trypanosoma cruzi, they could acquire the parasite by coming in contact with infected people living in GBA. Besides, the numerous and widely distributed places housing hens and chickens, would favor the settlement of the vector. Together, both facts may constitute a risk of parasitic vectorial transmission.
Keywords
Triatoma infestans, hens, urban triatomine foci, Greater Buenos Aires, Argentina
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