Periurban Trypanosoma cruzi-infected Triatoma infestans, Arequipa, Peru

Michael Zachary Levy, Natalie M. Bowman, Vivian Kawai, Lance A. Waller, Juan Geny Cornejo Del Carpio, Eleazar Cordova Benzaquen, Robert H. Gilman, Caryn Bern

Research output: Contribution to journalArticle


In Arequipa, Peru, vectorborne transmission of Chagas disease by Triatoma infestans has become an urban problem. We conducted an entomologic survey in a periurban community of Arequipa to identify risk factors for triatomine infestation and determinants of vector population densities. Of 374 households surveyed, triatomines were collected from 194 (52%), and Trypanosoma cruzi-carrying triatomines were collected from 72 (19.3%). Guinea pig pens were more likely than other animal enclosures to be infested and harbored 2.38x as many triatomines. Stacked brick and adobe enclosures were more likely to have triatomines, while wire mesh enclosures were protected against infestation. In human dwellings, only fully stuccoed rooms were protected against infestation. Spatially, households with triatomines were scattered, while households with T. cruzi-infected triatomines were clustered. Keeping small animals in wire mesh cages could facilitate control of T. infestans in this densely populated urban environment.

Original languageEnglish (US)
Pages (from-to)1345-1352
Number of pages8
JournalEmerging infectious diseases
Issue number9
StatePublished - Oct 2 2006

ASJC Scopus subject areas

  • Epidemiology
  • Microbiology (medical)
  • Infectious Diseases

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  • Cite this

    Levy, M. Z., Bowman, N. M., Kawai, V., Waller, L. A., Del Carpio, J. G. C., Benzaquen, E. C., Gilman, R. H., & Bern, C. (2006). Periurban Trypanosoma cruzi-infected Triatoma infestans, Arequipa, Peru. Emerging infectious diseases, 12(9), 1345-1352.