Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs
Triatoma infestans is one of the main domestic vectors of Chagas disease. Reports of wild habitat occurrences have recently increased. In Chile, after a successful elimination campaign of T. infestans domestic infestation, a sylvatic focus was reported in bromeliads in the metropolitan region. Here,...
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Instituto Oswaldo Cruz, Ministério da Saúde
2010-08-01
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doaj-f4ee2b8f6d3d432a95ad9123766a4a4a2020-11-24T22:06:30ZengInstituto Oswaldo Cruz, Ministério da SaúdeMemórias do Instituto Oswaldo Cruz.0074-02761678-80602010-08-01105563364110.1590/S0074-02762010000500006Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programsAntonella BacigalupoFernando Torres-PérezVerónica SegoviaAlejandro GarcíaJuana P CorreaLucila MorenoPatricio ArroyoPedro E CattanTriatoma infestans is one of the main domestic vectors of Chagas disease. Reports of wild habitat occurrences have recently increased. In Chile, after a successful elimination campaign of T. infestans domestic infestation, a sylvatic focus was reported in bromeliads in the metropolitan region. Here, we report a new focus of sylvatic T. infestans inhabiting rock piles in the Valparaíso region in central Chile. All T. infestans captured were nymphal instars living among the stones, which were inhabited by several mammal species, along with the sylvatic triatomine vector Mepraia spinolai. We found a prevalence of infection with Trypanosoma cruzi of 36.54% in T. infestans, similar to the previous report for sylvatic specimens from bromeliads. Sylvatic populations of T. infestans should be studied at different geographic scales to elucidate their role in the maintenance of the sylvatic transmission cycle of T. cruzi and their possible role in threatening the domestic elimination of this vector. This information should be used to re-design the control programs in Chile to avoid the re-establishment of the domestic cycle.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762010000500006Triatoma infestanstriatominaeTrypanosoma cruziSylvatic Chagas disease vectors |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Antonella Bacigalupo Fernando Torres-Pérez Verónica Segovia Alejandro García Juana P Correa Lucila Moreno Patricio Arroyo Pedro E Cattan |
spellingShingle |
Antonella Bacigalupo Fernando Torres-Pérez Verónica Segovia Alejandro García Juana P Correa Lucila Moreno Patricio Arroyo Pedro E Cattan Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs Memórias do Instituto Oswaldo Cruz. Triatoma infestans triatominae Trypanosoma cruzi Sylvatic Chagas disease vectors |
author_facet |
Antonella Bacigalupo Fernando Torres-Pérez Verónica Segovia Alejandro García Juana P Correa Lucila Moreno Patricio Arroyo Pedro E Cattan |
author_sort |
Antonella Bacigalupo |
title |
Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs |
title_short |
Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs |
title_full |
Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs |
title_fullStr |
Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs |
title_full_unstemmed |
Sylvatic foci of the Chagas disease vector Triatoma infestans in Chile: description of a new focus and challenges for control programs |
title_sort |
sylvatic foci of the chagas disease vector triatoma infestans in chile: description of a new focus and challenges for control programs |
publisher |
Instituto Oswaldo Cruz, Ministério da Saúde |
series |
Memórias do Instituto Oswaldo Cruz. |
issn |
0074-0276 1678-8060 |
publishDate |
2010-08-01 |
description |
Triatoma infestans is one of the main domestic vectors of Chagas disease. Reports of wild habitat occurrences have recently increased. In Chile, after a successful elimination campaign of T. infestans domestic infestation, a sylvatic focus was reported in bromeliads in the metropolitan region. Here, we report a new focus of sylvatic T. infestans inhabiting rock piles in the Valparaíso region in central Chile. All T. infestans captured were nymphal instars living among the stones, which were inhabited by several mammal species, along with the sylvatic triatomine vector Mepraia spinolai. We found a prevalence of infection with Trypanosoma cruzi of 36.54% in T. infestans, similar to the previous report for sylvatic specimens from bromeliads. Sylvatic populations of T. infestans should be studied at different geographic scales to elucidate their role in the maintenance of the sylvatic transmission cycle of T. cruzi and their possible role in threatening the domestic elimination of this vector. This information should be used to re-design the control programs in Chile to avoid the re-establishment of the domestic cycle. |
topic |
Triatoma infestans triatominae Trypanosoma cruzi Sylvatic Chagas disease vectors |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762010000500006 |
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