| the lesions and prevalence of trypanosoma cruzi in opossums and armadillos from southern louisiana. | the prevalence of trypanosoma cruzi in 48 opossums and 98 armadillos from southern louisiana was studied. sixteen opossums (33.3%) and 1 armadillo (1.1%) were positive for t. cruzi by blood culture. hearts from 45 opossums and the tissues from the 1 blood culture-positive armadillo were available for histopathological examination. although histopathology revealed t. cruzi pseudocysts in 6 opossums, 2 were not positive on blood culture. therefore, 18 opossums (37.5%) were positive for t. cruzi. t ... | 1991 | 1907654 |
| the prevalence of trypanosoma cruzi infection in armadillos collected at a site near new orleans, louisiana. | a study was made of the prevalence of trypanosoma cruzi infection in armadillos at a site near new orleans, louisiana, where the flagellate was known to occur. blood cultures, microscopic examination of blood, and direct agglutination tests on sera were employed in 80 armadillos. t. cruzi was isolated in culture from 23 of 80 animals; identity of the parasite was confirmed in mice inoculated with each of the isolates. only 2 animals were positive by direct examination of blood. serologic evidenc ... | 1988 | 3128127 |
| chagas disease in the united states: a cause for concern in louisiana? | chagas disease, or american trypanosomiasis, is an arthropod-borne protozoan infectious disease, hyperendemic throughout latin america, caused by trypanosoma cruzi, and transmitted to man by reduviid or kissing bugs. throughout the americas, chagas disease shares many life cycle features with malaria, including transmission of infectious stages by local arthropods, exacerbation or reactivation of subclinical infections by immunosuppression (particularly hiv/aids) and pregnancy, and both transpla ... | 2007 | 17396472 |
| autochthonous transmission of trypanosoma cruzi, louisiana. | autochthonous transmission of the chagas disease parasite, trypanosoma cruzi, was detected in a patient in rural new orleans, louisiana. the patient had positive test results from 2 serologic tests and hemoculture. fifty-six percent of 18 triatoma sanguisuga collected from the house of the patient were positive for t. cruzi by pcr. | 2007 | 17553277 |
| comparison of two immunochromatographic assays and the indirect immunofluorescence antibody test for diagnosis of trypanosoma cruzi infection in dogs in south central louisiana. | two rapid tests evaluated in dogs considered to be of high risk of infection with the chagas parasite trypanosoma cruzi using two immunochromatographic assays: trypanosoma detect for canine, inbios, seattle, wa and chagas stat-pak assay, chembio diagnostic systems, medford, ny, in south central louisiana. for this purpose a serological survey was carried out in a total of 122 dogs and a serum bank was created. these 122 animals were first tested by ifat that was used as the standard test. from t ... | 2009 | 19647943 |
| 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. | we examined the prevalence of antibodies to zoonotic protozoan parasites ( trypanosoma cruzi, toxoplasma gondii, and encephalitozoon cuniculi) and protozoans of veterinary importance ( neospora caninum, sarcocystis neurona, and besnoitia darlingi) in a population of north american opossums ( didelphis virginiana) from louisiana. samples from 30 opossums were collected as part of a survey for t. cruzi in louisiana. frozen sera from these 30 opossums were examined using an indirect immunofluoresce ... | 2010 | 21158620 |
| high trypanosoma cruzi (kinetoplastida: trypanosomatidae) prevalence in triatoma sanguisuga (hemiptera: redviidae) in southeastern louisiana. | from may through november 2007, intensive weekly surveys at the site of a previously reported autochthonous human case of chagas parasite infection resulted in the collection of 298 triatoma sanguisuga (leconte) specimens, of which 60.4% (180) were polymerase chain reaction positive for trypanosoma cruzi chagas. all were adults, in a ratio of approximately 1:1 female to male, indicating that the domicile was not colonized, but was a destination for these host-seeking adults. we report on seasona ... | 2011 | 21936329 |
| trypanosoma cruzi and chagas' disease in the united states. | chagas' disease is caused by the protozoan parasite trypanosoma cruzi and causes potentially life-threatening disease of the heart and gastrointestinal tract. the southern half of the united states contains enzootic cycles of t. cruzi, involving 11 recognized triatomine vector species. the greatest vector diversity and density occur in the western united states, where woodrats are the most common reservoir; other rodents, raccoons, skunks, and coyotes are also infected with t. cruzi. in the east ... | 2011 | 21976603 |
| genotype diversity of trypanosoma cruzi in small rodents and triatoma sanguisuga from a rural area in new orleans, louisiana. | chagas disease is an anthropozoonosis caused by the protozoan parasite trypanosoma cruzi that represents a major public health problem in latin america. although the united states is defined as non-endemic for chagas disease due to the rarity of human cases, the presence of t. cruzi has now been amply demonstrated as enzootic in different regions of the south of the country from georgia to california. in southeastern louisiana, a high t. cruzi infection rate has been demonstrated in triatoma san ... | 2015 | 25890064 |
| low prevalence of chagas parasite infection in a nonhuman primate colony in louisiana. | chagas disease, an important cause of heart disease in latin america, is caused by the parasite trypanosoma cruzi, which typically is transmitted to humans by triatomine insects. although autochthonous transmission of the chagas parasite to humans is rare in the united states, triatomines are common, and more than 20 species of mammals are infected with the chagas parasite in the southern united states. chagas disease has also been detected in colonies of nonhuman primates (nhp) in georgia and t ... | 2012 | 23043809 |
| factors associated with peridomestic triatoma sanguisuga (hemiptera: reduviidae) presence in southeastern louisiana. | although rare, there have been isolated reports of autochthonous transmission of trypanosoma cruzi chagas in the united states. in june 2006, a human case of domestically transmitted t. cruzi was identified in southern louisiana. to examine the localized risk of human t. cruzi infection in the area surrounding the initial human case, environmental surveys of households in the area and a serological survey of the residents were performed between september 2008 and november 2009. human t. cruzi in ... | 2014 | 25276935 |
| triatoma sanguisuga blood meals and potential for chagas disease, louisiana, usa. | to evaluate human risk for chagas disease, we molecularly identified blood meal sources and prevalence of trypanosoma cruzi infection among 49 triatoma sanguisuga kissing bugs in louisiana, usa. humans accounted for the second most frequent blood source. of the bugs that fed on humans, ≈40% were infected with t. cruzi, revealing transmission potential. | 0 | 25418456 |
| trypanosoma cruzi infection in walker hounds from virginia. | trypanosomiasis has been reported in dogs from texas, oklahoma, louisiana, and south carolina. we describe the first isolation and characterization of trypanosoma cruzi from a walker hound pup in virginia that also had postvaccinal distemper. the mother of the pup and 7 of its 8 siblings also were found to be infected with t cruzi, suggesting that the parasite had been transmitted transplacentally or through lactation. parasitologic, serologic, histologic, and molecular methods were used to esta ... | 1995 | 8533975 |
| myocarditis caused by trypanosoma cruzi in a native louisiana dog. | | 1980 | 6777353 |
| anti-trypanosoma cruzi antibodies among domestic dogs in new orleans. | | 1983 | 6415191 |
| growth characteristics in axenic and cell cultures, protein profiles, and zymodeme typing of three trypanosoma cruzi isolates from louisiana mammals. | rates of trypomastigote adherence, interiorization, amastigote division in, and trypomastigote release from vero cells were measured for trypanosoma cruzi isolates from a dog (tc-d), opossum (tc-o), and an armadillo (tc-a) from louisiana. because the tc-o and tc-a (wild isolates) trypomastigotes became interiorized rapidly, the media were quickly depleted of trypomastigotes thus reducing the numbers available to adhere to cells. in contrast, the tc-d trypomastigote interiorization rate was slowe ... | 1990 | 2213406 |
| serologic and blood culture survey of trypanosoma cruzi infection in four canine populations of southern louisiana. | blood culture and serologic testing were used to study the prevalence of trypanosoma cruzi infection in a group of 85 dogs from southern louisiana rural environment. these dogs were known to have been in contact with wild mammalian hosts of the hemoflagellate. results were compared with blood culture and serologic test results in 103 dogs from a rural environment and with limited known wild mammalian t cruzi host contact. serologic test results for the 188 dogs from the rural environment were co ... | 1991 | 1905115 |
| electrocardiographic and echocardiographic features of trypanosomiasis in dogs inoculated with north american trypanosoma cruzi isolates. | purebred beagles were inoculated with trypanosoma cruzi isolates from a north american opossum or armadillo (tc-w), and dog (tc-d). although tc-d established infection in dogs, the dogs did not develop cardiac abnormalities. dogs inoculated with tc-w developed acute myocarditis associated with increases in p-r interval, atrioventricular block, depression of r wave amplitude and shifts in mean electrical axis. echocardiograms were normal during this stage. three tc-w-inoculated dogs died during t ... | 1992 | 1586022 |