Community-based surveillance and control of chagas disease vectors in remote rural areas of the Argentine Chaco: A five-year follow-up

Autor: Lucía I. Rodríguez-Planes, Gonzalo M. Vazquez-Prokopec, Uriel Kitron, Ricardo E. Gürtler, María C. Cecere
Rok vydání: 2018
Předmět:
0301 basic medicine
Rural Population
Insecticides
VECTOR CONTROL
Veterinary (miscellaneous)
COMMUNITY PARTICIPATION
030231 tropical medicine
medicine.disease_cause
Insect Control
law.invention
Ciencias Biológicas
03 medical and health sciences
0302 clinical medicine
law
Abundance (ecology)
SURVEILLANCE
parasitic diseases
Triatoma infestans
Infestation
Pyrethrins
medicine
Animals
Humans
Chagas Disease
Socioeconomics
INSECTICIDE SPRAYING
Disease surveillance
biology
CHAGAS DISEASE
Ecología
030108 mycology & parasitology
biology.organism_classification
Insect Vectors
Infectious Diseases
Transmission (mechanics)
Geography
Habitat
DETECTION METHODS
Insect Science
Vector (epidemiology)
Animals
Domestic
Population Surveillance
Parasitology
Rural area
CIENCIAS NATURALES Y EXACTAS
Follow-Up Studies
Zdroj: Acta tropica. 191
ISSN: 1873-6254
Popis: Prevention of Chagas disease vector-borne transmission mostly relies on the residual application of pyrethroid insecticide. Persistent or recurrent house infestation after insecticide spraying remains a serious challenge in remote, resource-poor rural areas where public health services face substantial constraints. Here we use generalized estimating equations and multimodel inference to model the fine-scale, time-lagged effects of a community-based vector surveillance-and-response strategy on house infestation and abundance of Triatoma infestans in four rural communities of the Argentine Chaco over a five-year period. Householders and community leaders were trained to detect triatomines and spray with insecticides their premises if infested. House infestation and vector abundance were consistently higher in peridomestic habitats than in human habitations (domiciles). Householders supplemented with sensor boxes detected infested domiciles (67%) more frequently than timed-manual searches (49%). Of all houses ever found to be infested by timed-manual searches, 76% were sprayed within six months upon detection. Domestic triatomine abundance was significantly related to house-level insecticide spraying during the previous year (inversely) and current peridomestic abundance (positively). Peridomestic triatomine abundance significantly increased with current domestic bug abundance and maximum peridomestic abundance during the previous year, and was unaffected by insecticide spraying. Our study provides new empirical evidence of the interconnection and flow between domestic and peridomestic populations of T. infestans under recurrent insecticide treatments, and supports targeting both habitats with appropriate tactics for longer-lasting, improved vector control. Community-directed efforts succeeded in controlling domestic infestations and interrupting domestic transmission, whereas persistent peridomestic infestations demand sustained control efforts to address domestic reinvasions. Fil: Cecere, Maria Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina Fil: Rodríguez Planes, Lucía Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina Fil: Vazquez Prokopec, Gonzalo Martin. University of Emory; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Kitron, Uriel D.. University of Emory; Estados Unidos Fil: Gurtler, Ricardo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Databáze: OpenAIRE
Externí odkaz: