Probability of Trypanosoma cruzi transmission by Triatoma infestans (Hemiptera: Reduviidae) to the opossum Didelphis albiventris (Marsupialia: Didelphidae)

The probability of Trypanosoma cruzi transmission to opossums by independent events of predation and fecal contamination during feeding ("biting") with positive Triatoma infestans was estimated. Negative female opossums were challenged for 23 hr with 10 infected third and fourth instars of...

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Detalles Bibliográficos
Autores principales:	Rabinovich, Jorge Eduardo, Schweigmann, N., Yohai, V., Wisnivesky Colli, C.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2001
Materias:	Biología Trypanosoma cruzi Triatoma infestans Didelphis albiventris
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/83605
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-83605
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Biología Trypanosoma cruzi Triatoma infestans Didelphis albiventris
spellingShingle	Biología Trypanosoma cruzi Triatoma infestans Didelphis albiventris Rabinovich, Jorge Eduardo Schweigmann, N. Yohai, V. Wisnivesky Colli, C. Probability of Trypanosoma cruzi transmission by Triatoma infestans (Hemiptera: Reduviidae) to the opossum Didelphis albiventris (Marsupialia: Didelphidae)
topic_facet	Biología Trypanosoma cruzi Triatoma infestans Didelphis albiventris
description	The probability of Trypanosoma cruzi transmission to opossums by independent events of predation and fecal contamination during feeding ("biting") with positive Triatoma infestans was estimated. Negative female opossums were challenged for 23 hr with 10 infected third and fourth instars of T. infestans, and tests for positivity for T. cruzi by xenodiagnosis were performed at 30, 60, and 90 days. From these data, seven probability parameters were estimated by maximum likelihood, and likelihood ratio statistics confidence intervals were calculated. Simultaneous estimation of p1 (probability that a "bite" will infect an opossum), p3 (probability that a bug that has been eaten by an opossum will infect it), and p6 (probability that the opossum will become infected if faced with an infected triatomine), resulted in p̂1 = 0.06, p̂3 = 0.075, and p̂6 = 0.059. On average, each opossum should be exposed to an average of 700 encounters with bugs during its life, resulting in about eight potentially infective contacts, to produce the 35% opossum prevalence found in the field.
format	Articulo Articulo
author	Rabinovich, Jorge Eduardo Schweigmann, N. Yohai, V. Wisnivesky Colli, C.
author_facet	Rabinovich, Jorge Eduardo Schweigmann, N. Yohai, V. Wisnivesky Colli, C.
author_sort	Rabinovich, Jorge Eduardo
title	Probability of Trypanosoma cruzi transmission by Triatoma infestans (Hemiptera: Reduviidae) to the opossum Didelphis albiventris (Marsupialia: Didelphidae)
title_short	Probability of Trypanosoma cruzi transmission by Triatoma infestans (Hemiptera: Reduviidae) to the opossum Didelphis albiventris (Marsupialia: Didelphidae)
title_full	Probability of Trypanosoma cruzi transmission by Triatoma infestans (Hemiptera: Reduviidae) to the opossum Didelphis albiventris (Marsupialia: Didelphidae)
title_fullStr	Probability of Trypanosoma cruzi transmission by Triatoma infestans (Hemiptera: Reduviidae) to the opossum Didelphis albiventris (Marsupialia: Didelphidae)
title_full_unstemmed	Probability of Trypanosoma cruzi transmission by Triatoma infestans (Hemiptera: Reduviidae) to the opossum Didelphis albiventris (Marsupialia: Didelphidae)
title_sort	probability of trypanosoma cruzi transmission by triatoma infestans (hemiptera: reduviidae) to the opossum didelphis albiventris (marsupialia: didelphidae)
publishDate	2001
url	http://sedici.unlp.edu.ar/handle/10915/83605
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bdutipo_str	Repositorios
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Probability of Trypanosoma cruzi transmission by Triatoma infestans (Hemiptera: Reduviidae) to the opossum Didelphis albiventris (Marsupialia: Didelphidae)

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