Artículo

Gurtler, R.E.; Cecere, M.C.; Castanera, M.B.; Canale, D.; Lauricella, M.A.; Chuit, R.; Cohen, J.E.; Segura, E.L. "Probability of infection with Trypanosoma Cruzi of the vector Triatoma infestans fed on infected humans and dogs in Northwest Argentina" (1996) American Journal of Tropical Medicine and Hygiene. 55(1):24-31
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Abstract:

The probability that an uninfected Triatoma infestans would become infected with Trypanosoma cruzi after a single feed on people or dogs seropositive for T. cruzi was estimated in Amama, a rural village in northwest Argentina where transmission had resurged four years earlier. The prevalence of seropositivity for T. cruzi was 34.2% among 225 people tested, and 65.1% among 83 dogs tested. Parasitemia was detected by xenodiagnosis in 29.3% of 41 seropositive persons and in 85.3% of 34 seropositive dogs. Parasitemia decreased with age more sharply in seropositive people than in seropositive dogs. Seropositive humans infected 2.6% (95% confidence interval = 1.6%-3.6%) of 963 third or fourth instar nymphs fed once on them, whereas dogs infected 48.7% (44.7%-52.7%) of 610 nymphs. The probability of bug infection increased significantly with instar and was positively related to molting success. The infectivity to bugs of seropositive dogs was 12 times higher than that of seropositive children, and 100 times higher than that of seropositive adults. The weighted probability of infection of an uninfected bug fed randomly on any dog (0.3082) was about 50 times higher than that of bugs fed on any human (0.0062). Such differences in relative infectivity, combined with the relative host-feeding preference of domiciliary Triatoma infestons for dogs, reinforces the important role of domestic dogs as a risk factor for the domestic transmission of T. cruzi.

Registro:

Documento: Artículo
Título:Probability of infection with Trypanosoma Cruzi of the vector Triatoma infestans fed on infected humans and dogs in Northwest Argentina
Autor:Gurtler, R.E.; Cecere, M.C.; Castanera, M.B.; Canale, D.; Lauricella, M.A.; Chuit, R.; Cohen, J.E.; Segura, E.L.
Filiación:Laboratorio de Ecologia General, Departamento de Ciencias Biologicas, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Servicio Nacional de Chagas, 9 de Julio 356, 5000 Cordoba, Argentina
Inst. Nac. Chagas Dr. Mario F., Paseo Colon 568, 1063 Buenos Aires, Argentina
Direccion de Epidemiologia, Min. Salud y Accion Social la Nacion, 9 de Julio 1016, 1032 Buenos Aires, Argentina
Laboratory of Populations, Rockefeller University, Box 20, 1230 York Avenue, New York, NY 10021-6399, United States
Rockefeller University, Box 20, 1230 York Avenue, New York, NY 10021-6399, United States
Palabras clave:adolescent; adult; argentina; article; child; dog; female; human; male; nonhuman; parasite vector; parasitemia; trypanosoma cruzi; trypanosomiasis; Adolescent; Adult; Animals; Argentina; Chagas Disease; Child; Child, Preschool; Dog Diseases; Dogs; Female; Humans; Insect Vectors; Larva; Male; Parasitemia; Prevalence; Triatoma; Trypanosoma cruzi
Año:1996
Volumen:55
Número:1
Página de inicio:24
Página de fin:31
Título revista:American Journal of Tropical Medicine and Hygiene
Título revista abreviado:Am. J. Trop. Med. Hyg.
ISSN:00029637
CODEN:AJTHA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v55_n1_p24_Gurtler

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Citas:

---------- APA ----------
Gurtler, R.E., Cecere, M.C., Castanera, M.B., Canale, D., Lauricella, M.A., Chuit, R., Cohen, J.E.,..., Segura, E.L. (1996) . Probability of infection with Trypanosoma Cruzi of the vector Triatoma infestans fed on infected humans and dogs in Northwest Argentina. American Journal of Tropical Medicine and Hygiene, 55(1), 24-31.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v55_n1_p24_Gurtler [ ]
---------- CHICAGO ----------
Gurtler, R.E., Cecere, M.C., Castanera, M.B., Canale, D., Lauricella, M.A., Chuit, R., et al. "Probability of infection with Trypanosoma Cruzi of the vector Triatoma infestans fed on infected humans and dogs in Northwest Argentina" . American Journal of Tropical Medicine and Hygiene 55, no. 1 (1996) : 24-31.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v55_n1_p24_Gurtler [ ]
---------- MLA ----------
Gurtler, R.E., Cecere, M.C., Castanera, M.B., Canale, D., Lauricella, M.A., Chuit, R., et al. "Probability of infection with Trypanosoma Cruzi of the vector Triatoma infestans fed on infected humans and dogs in Northwest Argentina" . American Journal of Tropical Medicine and Hygiene, vol. 55, no. 1, 1996, pp. 24-31.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v55_n1_p24_Gurtler [ ]
---------- VANCOUVER ----------
Gurtler, R.E., Cecere, M.C., Castanera, M.B., Canale, D., Lauricella, M.A., Chuit, R., et al. Probability of infection with Trypanosoma Cruzi of the vector Triatoma infestans fed on infected humans and dogs in Northwest Argentina. Am. J. Trop. Med. Hyg. 1996;55(1):24-31.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v55_n1_p24_Gurtler [ ]