The Lesions and Prevalence of Trypanosoma cruzi in Opossums and Armadillos from Southern Louisiana

Abstract

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Chagas disease in Mexico: an analysis of geographical distribution during the past 76 years - A review

“…It is evident that T. cruzi has always been present in Mexico as well as in the United States (Barr et al 1991, Hagar & Rahimtoola 1991, Pung et al 1995, Herwaldt et al 2000, Barnabe et al 2001, the geographic distribution of T. cruzi ranges from the United States to Southern Argentina. According to the information we have compiled about a variety of different topics related to Chagas disease in Mexico, it is clear that we must develop better approaches to understand all of the relevant variables.…”

Prevalence of Antibodies to Trypanosoma cruzi, Toxoplasma gondii, Encephalitozoon cuniculi, Sarcocystis neurona, Besnoitia darlingi, and Neospora caninum in North American Opossums, Didelphis virginiana, from Southern Louisiana

“…All but 1 of the previous studies on the prevalence of T. cruzi in North American opossums has been conducted by hemoculture (McKeever et al, 1958;Olsen et al, 1964;Barr et al, 1991;Karsten et al, 1992;Pung et al, 1995;Brown et al, 2010). Hemoculture studies have demonstrated that 17 (14%) of 126 opossums from east-central Alabama (Olsen et al, 1964), 88 (16%) of 552 opossums from southwestern Georgia and northwestern Florida (McKeever et al, 1958), 16 (33%) of 48 opossums from Louisiana (Barr et al, 1992), 6 (15%) of 39 opossums from southeast Georgia (Pung et al, 1995), and 1 (8%) of 12 opossums from North Carolina (Karsten et al, 1992) were infected with T. cruzi.…”

“…Sera from 30 opossums from southern Louisiana (Barr et al, 1991) were examined in the present study. Frozen samples were sent by overnight carrier from the Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York to the Center for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, Virginia (CMMID).…”

Prevalence and incidence density of Mycobacterium leprae and Trypanosoma cruzi infections within a population of wild nine-banded armadillos.

“…[3][4][5][6][7][8] Although zoonotic transmission of T. cruzi may be restricted by the absence of appropriate insect vectors in North America, many investigators have speculated that armadillos might be an important source of leprosy infection for humans. 4,9 We wondered if there were any similarities in the epidemiology of these infections among armadillos that could aid our understanding of how the agents are transmitted and benefit our appreciation of their zoonotic potential.…”

“…[4][5][6][7] Cross-sectional studies based on point prevalence estimates have only limited value. 10 Studies relating the disease intensity to factors that influence transmission between animals in different areas may be served better by comparing the prevalence of 2 infections or examining the incidence density of the infections.…”