Irrigation, migration and infestation: a case study of Chagas disease vectors and bed bugs in El Pedregal, Peru.

Autor:	Gonçalves R; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru., Hacker KP; University of Pennsylvania, Department of Biostatistics, Epidemiology and Informatics, Philadelphia, PA, United States of America.; University of Michigan, Department of Epidemiology, Ann Arbor, MI, United States of America., Condori C; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru., Xie S; University of Pennsylvania, Department of Biostatistics, Epidemiology and Informatics, Philadelphia, PA, United States of America., Borrini-Mayori K; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru., Riveros LM; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru., Apaza RQ; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru., Arratea MY; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru., Nativio G; University of Pennsylvania, Department of Biostatistics, Epidemiology and Informatics, Philadelphia, PA, United States of America., Castillo-Neyra R; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru.; University of Pennsylvania, Department of Biostatistics, Epidemiology and Informatics, Philadelphia, PA, United States of America., Paz-Soldan VA; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru.; Tulane University School of Public Health and Tropical Medicine, Department of Tropical Medicine, New Orleans, LA, United States of America., Levy MZ; Universidad Peruana Cayetano Heredia, School of Public Health and Administration, One Health Unit, Zoonotic Disease Research Lab, Lima, Peru.; University of Pennsylvania, Department of Biostatistics, Epidemiology and Informatics, Philadelphia, PA, United States of America.
Jazyk:	angličtina
Zdroj:	Memorias do Instituto Oswaldo Cruz [Mem Inst Oswaldo Cruz] 2024 Sep 02; Vol. 119, pp. e240002. Date of Electronic Publication: 2024 Sep 02 (Print Publication: 2024).
DOI:	10.1590/0074-02760240002
Abstrakt:	Background: The city of El Pedregal grew out of a desert, following an agricultural irrigation project in southern Peru. Objectives: To describe infestation patterns by triatomines and bed bugs and their relationship to migration and urbanization. Methods: We conducted door-to-door entomological surveys for triatomines and bed bugs. We assessed spatial clustering of infestations and compared the year of construction of infested to un-infested households. To gain a better understanding of the context surrounding triatomine infestations, we conducted in-depth interviews with residents to explore their migration histories, including previous experiences with infestation. Findings: We inspected 5,164 households for Triatoma infestans (known locally as the Chirimacha); 21 (0.41%) were infested. These were extremely spatially clustered (Ripley's K p-value < 0.001 at various spatial scales). Infested houses were older than controls (Wilcoxon rank-sum: W = 33; p = 0.02). We conducted bed bug specific inspections in 34 households; 23 of these were infested. These were spatially dispersed across El Pedregal, and no difference was observed in construction age between bed bug infested houses and control houses (W = 6.5, p = 0.07). Main Conclusions: The establishment of agribusiness companies in a desert area demanded a permanent work force, leading to the emergence of a new city. Migrant farmers, seeking work opportunities or escaping from adverse climatic events, arrived with few resources, and constructed their houses with precarious materials. T. infestans, a Chagas disease vector, was introduced to the city and colonized houses, but its dispersal was constrained by presence of vacant houses. We discuss how changes in the socioeconomic and agricultural landscape can increase vulnerability to vector-borne illnesses.
Databáze:	MEDLINE
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