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      House-level risk factors for Triatoma dimidiata infestation in Colombia.

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          Abstract

          In Colombia, the main vectors of Trypanosoma cruzi, the causative agent of Chagas disease, are Rhodnius prolixus and Triatoma dimidiata. T. dimidiata is present in the east region of Colombia as domestic, peridomestic, and sylvatic populations, resulting in difficulties for its control. A cost-effective way to prioritize houses for treatment is to stratify houses based on risk factors. In this study, risk factors were evaluated for potential associations with domicile infestation of T. dimidiata. There was an increased likelihood of domestic infestation associated with the presence of mixed roofs (odds ratio [OR] = 36.14, 95% confidence interval [95% CI] = 12.21-106.97), cats (OR = 3.94, 95% CI = 1.36-11.38), rock piles (OR = 5.28, 95% CI = 1.64-16.98), and bushes with height above 10 m (OR = 11.21, 95% CI = 2.08-60.45). These factors could be used to target surveillance and control of T. dimidiata to houses with an increased risk of being infested.

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          Author and article information

          Journal
          Am. J. Trop. Med. Hyg.
          The American journal of tropical medicine and hygiene
          American Society of Tropical Medicine and Hygiene
          1476-1645
          0002-9637
          Jan 2015
          : 92
          : 1
          Affiliations
          [1 ] Red Chagas, Bogotá, Colombia; Instituto Colombiano de Medicina Tropical, Medellín, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Centro de Investigación en Enfermedades Tropicales, Universidad Industrial de Santander, Bucaramanga, Colombia; London School of Hygiene and Tropical Medicine, London, United Kingdom gparrahenao@gmail.com.
          [2 ] Red Chagas, Bogotá, Colombia; Instituto Colombiano de Medicina Tropical, Medellín, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Centro de Investigación en Enfermedades Tropicales, Universidad Industrial de Santander, Bucaramanga, Colombia; London School of Hygiene and Tropical Medicine, London, United Kingdom.
          Article
          ajtmh.14-0273
          10.4269/ajtmh.14-0273
          4347379
          25349372
          d3ef204c-be91-4efa-bd8f-d116468ebe9e
          History

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