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Ceballos, L.A.; Cardinal, M.V.; Vazquez-Prokopec, G.M.; Lauricella, M.A.; Orozco, M.M.; Cortinas, R.; Schijman, A.G.; Levin, M.J.; Kitron, U.; Gürtler, R.E. "Long-term reduction of Trypanosoma cruzi infection in sylvatic mammals following deforestation and sustained vector surveillance in northwestern Argentina" (2006) Acta Tropica. 98(3):286-296
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Abstract:

Long-term variations in the dynamics and intensity of sylvatic transmission of Trypanosoma cruzi were investigated around eight rural villages in the semiarid Argentine Chaco in 2002-2004 and compared to data collected locally in 1984-1991. Of 501 wild mammals from 13 identified species examined by xenodiagnosis, only 3 (7.9%) of 38 Didelphis albiventris opossums and 1 (1.1%) of 91 Conepatus chinga skunks were infected by T. cruzi. The period prevalence in opossums was four-fold lower in 2002-2004 than in 1984-1991 (32-36%). The infection prevalence of skunks also decreased five-fold from 4.1-5.6% in 1984-1991 to 1.1% in 2002-2004. Infection in opossums increased with age and from summer to spring in both study periods. The force of infection per 100 opossum-months after weaning declined more than six-fold from 8.2 in 1988-1991 to 1.2 in 2002-2004. Opossums were mainly infected by T. cruzi lineage I and secondarily by lineage IId in 1984-1991, and only by T. cruzi I in 2002-2004; skunks were infected by T. cruzi IId in 1984-1991 and by IIc in 2002-2004. The striking decline of T. cruzi infection in opossums and skunks occurred in parallel to community-wide insecticide spraying followed by selective sprays leading to very low densities of infected Triatoma infestans in domestic and peridomestic habitats since 1992; to massive deforestation around one of the villages or selective extraction of older trees, and apparent reductions in opossum abundance jointly with increases in foxes and skunks. These factors may underlie the dramatic decrease of T. cruzi infection in wild reservoir hosts. © 2006 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Long-term reduction of Trypanosoma cruzi infection in sylvatic mammals following deforestation and sustained vector surveillance in northwestern Argentina
Autor:Ceballos, L.A.; Cardinal, M.V.; Vazquez-Prokopec, G.M.; Lauricella, M.A.; Orozco, M.M.; Cortinas, R.; Schijman, A.G.; Levin, M.J.; Kitron, U.; Gürtler, R.E.
Filiación:Laboratorio de Eco-Epidemiología, Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Instituto Nacional de Parasitología Dr. Mario Fatala Chaben, Buenos Aires, Argentina
Instituto de Ingeniería Genética y Biología Molecular-CONICET, Buenos Aires, Argentina
College of Veterinary Medicine, University of Illinois at Urbana, Champaign, IL, United States
Palabras clave:Conepatus; Deforestation; Didelphis; Force of infection; Land use change; Opossums; Reservoirs; Skunks; Trypanosoma cruzi; insecticide; deforestation; disease control; disease prevalence; infectious disease; insecticide; mammal; semiarid region; trypanosomiasis; age distribution; animal experiment; animal model; Argentina; article; Carnivora; comparative study; controlled study; deforestation; female; fox; habitat structure; mammal; microbial population dynamics; mouse; nonhuman; opossum; parasite vector; prevalence; rural area; seasonal variation; spring; summer; Trypanosoma cruzi; trypanosomiasis; xenodiagnosis; Animal Diseases; Animals; Argentina; Chagas Disease; Conservation of Natural Resources; Mammals; Trees; Trypanosoma cruzi; Argentina; Chaco [Argentina]; South America; Canidae; Conepatus chinga; Didelphidae; Didelphis albiventris; Mammalia; Mephitidae; Triatoma infestans; Trypanosoma cruzi
Año:2006
Volumen:98
Número:3
Página de inicio:286
Página de fin:296
DOI: http://dx.doi.org/10.1016/j.actatropica.2006.06.003
Título revista:Acta Tropica
Título revista abreviado:Acta Trop.
ISSN:0001706X
CODEN:ACTRA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v98_n3_p286_Ceballos

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Citas:

---------- APA ----------
Ceballos, L.A., Cardinal, M.V., Vazquez-Prokopec, G.M., Lauricella, M.A., Orozco, M.M., Cortinas, R., Schijman, A.G.,..., Gürtler, R.E. (2006) . Long-term reduction of Trypanosoma cruzi infection in sylvatic mammals following deforestation and sustained vector surveillance in northwestern Argentina. Acta Tropica, 98(3), 286-296.
http://dx.doi.org/10.1016/j.actatropica.2006.06.003
---------- CHICAGO ----------
Ceballos, L.A., Cardinal, M.V., Vazquez-Prokopec, G.M., Lauricella, M.A., Orozco, M.M., Cortinas, R., et al. "Long-term reduction of Trypanosoma cruzi infection in sylvatic mammals following deforestation and sustained vector surveillance in northwestern Argentina" . Acta Tropica 98, no. 3 (2006) : 286-296.
http://dx.doi.org/10.1016/j.actatropica.2006.06.003
---------- MLA ----------
Ceballos, L.A., Cardinal, M.V., Vazquez-Prokopec, G.M., Lauricella, M.A., Orozco, M.M., Cortinas, R., et al. "Long-term reduction of Trypanosoma cruzi infection in sylvatic mammals following deforestation and sustained vector surveillance in northwestern Argentina" . Acta Tropica, vol. 98, no. 3, 2006, pp. 286-296.
http://dx.doi.org/10.1016/j.actatropica.2006.06.003
---------- VANCOUVER ----------
Ceballos, L.A., Cardinal, M.V., Vazquez-Prokopec, G.M., Lauricella, M.A., Orozco, M.M., Cortinas, R., et al. Long-term reduction of Trypanosoma cruzi infection in sylvatic mammals following deforestation and sustained vector surveillance in northwestern Argentina. Acta Trop. 2006;98(3):286-296.
http://dx.doi.org/10.1016/j.actatropica.2006.06.003