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Biomédica

versión impresa ISSN 0120-4157

Resumen

REYES, Marlene et al. Risk of transmission of Chagas disease by intrusion of triatomines and wild mammals in Bucaramanga, Santander, Colombia. Biomédica [online]. 2017, vol.37, n.1, pp.68-78. ISSN 0120-4157.  http://dx.doi.org/10.7705/biomedica.v37i1.3051.

Introduction:

Notice of triatomines in dwellings of some neighborhoods in Bucaramanga motivated the realization of this study.

Objetive:

To evaluate the intrusion of triatomines and mammals, as well as some risk factors in urban dwellings.

Materials and methods:

Triatomines were collected in a neighborhood in Bucaramanga, Santander, on a monthly basis during one year with participation of the community. Collection included manual search in lamp posts, use of light traps, animal bait, and chemical attractants in nearby forests. Reservoirs were collected with bait traps. Insects and mammals were identified and examined in order to determine their natural infection. Risk factors in homes were assessed by means of a social-environmental survey.

Results:

Eleven adult specimens of Pastrongylus geniculatus, as well as 63 of Rhodnius pallescens were collected in the forest, recreational peridomiciliary areas, and houses. Even two females and 21 nymphs of R. pallescens were found in bedrooms. Two specimens of Didelphis marsupialis were captured in neighboring forests. Out of the eleven P. geniculatus captured, nine were examined. Of these, five were positive for Trypanosoma cruzi. It was not possible to establish a significant risk factor; however, the dwellings with report of triatomines were located nearer to the adjacent forest.

Conclusions:

The finding of intrusive triatominae species and mammals with T. cruzi in intradomiciliary and peridomiciliary areas and periurban forests prove the potential risk to acquire infection from these populations that dwell in urban housing adjacent to these ecotopes where the sylvan cycle is kept.

Palabras clave : Triatominae; Chagas disease; urban area;Didelphis; risk; Colombia..

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