Contribuição para o estudo dos mecanismos de transmissão do agente etiológico da doença de Chagas

Ribeiro, R D; Garcia, T A R; Bonomo, W C

doi:10.1590/s0034-89101987000100008

Cited by 15 publications

(10 citation statements)

References 1 publication

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“…Finally, dogs, cats, and wild carnivores can be infected by T. cruzi or T. evansi by ingesting infected triatomines, the organs of animals killed by trypanosomosis, and infected fresh carcasses, from rodents, from foodstuffs contaminated by kissing bug feces, or from wild animals (16,(38)(39)(40)(41). The main mode of transmission in canine species seems to be the ingestion of infected vectors (42,43).…”

Section: Domestic Dogs Are Important Reservoirs Of Trypanosoma Cruzi mentioning

confidence: 99%

Canine trypanosomiasis: etiology of infection and implications for public health

Eloy¹,

Lucheis²

2009

J. Venom. Anim. Toxins incl. Trop. Dis

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Canine trypanosomiasis, caused by protozoans of the genusTrypanosoma, is divided into two primary types: the American form (Chagas disease), due to Trypanosoma cruzi infection, and the African form (sleeping sickness or surra), provoked by Trypanosoma evansi. This disease was originally enzootic and affected only wild animals, including mammals and birds, which served as reservoirs. Later, it spread to domestic animals such as horses, cattle and dogs. The disease became a zoonosis when contact between rural inhabitants and naturalTrypanosoma foci occurred, due to ecological imbalances and increasing migration.Dogs are significantly involved in this context, because they are the main domestic animals and participate in the transmission and maintenance cycles of these parasites. This article reports etiological, epidemiological and public health aspects of canine trypanosomiasis, and the most important peculiarities of this zoonosis in dogs.

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Section: Domestic Dogs Are Important Reservoirs Of Trypanosoma Cruzi mentioning

confidence: 99%

Canine trypanosomiasis: etiology of infection and implications for public health

Eloy¹,

Lucheis²

2009

J. Venom. Anim. Toxins incl. Trop. Dis

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“…Opossums are known to become infected with T. cruzi after being ''bitten'' by and/or ingesting triatomines. [12][13][14] When triatomines ''bite'' to feed on a host, the biting itself does not inoculate the parasite. Transmission takes place by fecal contamination during or after feeding.…”

Section: Introductionmentioning

confidence: 99%

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

Rabinovich¹,

Schweigmann²,

Yohai³

et al. 2001

The American Journal of Tropical Medicine and Hygiene

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Abstract. 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 p 1 (probability that a ''bite'' will infect an opossum), p 3 (probability that a bug that has been eaten by an opossum will infect it), and p 6 (probability that the opossum will become infected if faced with an infected triatomine), resulted in p 1 ϭ 0.06, p 3 ϭ 0.075, and p 6 ϭ 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.

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“…Varios autores (5,20,21) han presentado datos experimentales que demuestran que D. albiventris se podría infectar tanto a través de la vía vectorial clásica como por la ingesta de triatominos. Entre los biotopos que frecuenta D. albiventris también está presente Triatoma guasayana.…”

Section: Referenciasunclassified

Estudio de la prevalencia de la infección por Trypanosoma cruzi en zarigüeyas (Didelphis albiventris) en Santiago del Estero, Argentina

Schweigmann¹,

Pietrokovsky²,

Bottazzi³

et al. 1999

Rev Panam Salud Publica

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Contribuição para o estudo dos mecanismos de transmissão do agente etiológico da doença de Chagas

Cited by 15 publications

References 1 publication

Canine trypanosomiasis: etiology of infection and implications for public health

Canine trypanosomiasis: etiology of infection and implications for public health

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

Estudio de la prevalencia de la infección por Trypanosoma cruzi en zarigüeyas (Didelphis albiventris) en Santiago del Estero, Argentina

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