Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2006 Sep;12(9):1345-52.
doi: 10.3201/eid1209.051662.

Periurban Trypanosoma Cruzi-Infected Triatoma Infestans, Arequipa, Peru

Affiliations
Free PMC article

Periurban Trypanosoma Cruzi-Infected Triatoma Infestans, Arequipa, Peru

Michael Zachary Levy et al. Emerg Infect Dis. .
Free PMC article

Abstract

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.

Figures

Figure 1
Figure 1
High density of homes in the periurban community of Guadalupe, Arequipa, Peru, November 2004.
Figure 2
Figure 2
Map of households with Triatoma infestans and Trypanosmona cruzi–infected T. infestans in Guadalupe, a periurban community of Arequipa, Peru. Concentric circles are drawn around a house near the center of Guadalupe and represent parameters of T. infestans dispersal observed in rural areas (24,25). The nearest houses of neighboring communities are included for reference.
Figure 3
Figure 3
Clustering analysis of A) houses with Triatoma infestans and B) houses with Trypanosoma cruzi–infected T. infestans in a periurban community of Arequipa, Peru.

Similar articles

See all similar articles

Cited by 55 articles

See all "Cited by" articles

References

    1. World Health Organization The World Health Report 2003, annex 2. Deaths by cause, sex and mortality stratum in WHO regions, estimates for 2002. 2003. [cited 2005 Nov 21]. Available from http://www.who.int/whr/2003/en/Annex2-en.pdf
    1. Kirchhoff LV, Weiss LM, Wittner M, Tanowitz HB Parasitic diseases of the heart. Front Biosci. 2004;9:706–23 10.2741/1255 - DOI - PubMed
    1. Zeledon R, Rabinovich JE Chagas' disease: an ecological appraisal with special emphasis on its insect vectors. Annu Rev Entomol. 1981;26:101–33 10.1146/annurev.en.26.010181.000533 - DOI - PubMed
    1. Cohen JE, Gürtler RE Modeling household transmission of American trypanosomiasis. Science. 2001;293:694–8 10.1126/science.1060638 - DOI - PubMed
    1. Dias JC, Silveira AC, Schofield CJ The impact of Chagas disease control in Latin America: a review. Mem Inst Oswaldo Cruz. 2002;97:603–12 10.1590/S0074-02762002000500002 - DOI - PubMed

Publication types

LinkOut - more resources

Feedback