| [histotropism and pathogenicity of trypanosoma cruzi in albino mice (nhi) isolated from triatomines in nuevo leon, mexico]. | the neolonese strain of trypanosoma cruzi was obtained from deyections of nosed bugs (triatoma gerstaeckeri) which were caught in general teran and dr. coss, nuevo leon. this strain was kept alive for passing it from mouse-triatomines and vice versa. posteriorly, nests of amastigotes were found in skeletal and myocardial muscle fibers from albinous mouse mus musculus nhi by using light microscopy and electron microscopy. in consequence, the parasitic element was classified as a myotropic strain, ... | 1992 | 1306990 |
| potential arthropod vectors of african swine fever virus in north america and the caribbean basin. | in an effort to identify arthropods that might serve as vectors and perhaps reservoirs of african swine fever virus (asfv) if it were to enter the u.s.a., the blood-sucking insect triatoma gerstaeckeri and four species of ticks of the genus ornithodoros were established in colonies capable of reproducing in numbers sufficient to enable thorough studies to be made of their asfv vector potentials. a nymphal stage of t. gerstaeckeri carried the virus for 41 days and retained it through one molt, bu ... | 1987 | 3326244 |
| chagas disease in a domestic transmission cycle, southern texas, usa. | after three dogs died from acute chagas cardiomyopathy at one location, an investigation was conducted of the home, garage, and grounds of the owner. a serologic study was conducted on stray dogs, and an ecologic niche model was developed to predict areas where the vector triatoma gerstaeckeri might be expected. | 2003 | 12533289 |
| the transient viability of the spotted fever rickettsia in triatoma gerstaeckeri. | | 1952 | 13028974 |
| biology of three species of north american triatominae (hemiptera: reduviidae: triatominae) fed on rabbits. | aspects related to hatching, lifetime, number of blood meals for molting, mortality, feeding time, and postfeeding defecation delay were evaluated and compared in each instar of three north american triatominae: triatoma gerstaeckeri, triatoma lecticularia and triatoma protracta, all of them fed on rabbits. no significant differences (p > 0.05) were found among the three species regarding mean hatching rate, which was close to 20 days. egg-to-adult development times were significantly shorter (p ... | 2007 | 18209930 |
| biogeography and trypanosoma cruzi infection prevalence of chagas disease vectors in texas, usa. | data were pooled from multiple sources including newly collected triatomine specimens, preserved specimens, government reports, and scientific articles to create a biogeographical profile of triatomine vector species found in texas. triatomine specimens were documented in 97 of 254 counties, and trypanosoma cruzi-infected specimens were reported from 48 counties. triatomine specimens were distributed in 11 of the 12 ecoregions in texas, with all but one species found in multiple ecoregions. of t ... | 2008 | 18800865 |
| detection of blastocrithidia spp. (kinetoplastida: trypanosomatidae) in chagas disease vectors from texas, usa. | organisms highly similar to blastocrithidia triatomae, a pathogenic parasite of chagas disease triatomine bug vectors, were detected using polymerase chain reaction amplification and dna sequence analysis of a segment of the small subunit rrna gene in 3 of 203 triatomine specimens collected in texas from june 2005 to october 2006. the parasite was identified in three species of triatomine bugs (triatoma gerstaeckeri, t. indictiva, and t. neotomae) collected from three distinct geographic locatio ... | 2009 | 18803501 |
| estimating contact process saturation in sylvatic transmission of trypanosoma cruzi in the united states. | although it has been known for nearly a century that strains of trypanosoma cruzi, the etiological agent for chagas' disease, are enzootic in the southern u.s., much remains unknown about the dynamics of its transmission in the sylvatic cycles that maintain it, including the relative importance of different transmission routes. mathematical models can fill in gaps where field and lab data are difficult to collect, but they need as inputs the values of certain key demographic and epidemiological ... | 2010 | 20436914 |
| trypanosoma cruzi i genotypes in different geographical regions and transmission cycles based on a microsatellite motif of the intergenic spacer of spliced-leader genes. | the intergenic region of spliced-leader (sl-ir) genes from 105 trypanosoma cruzi i (tc i) infected biological samples, culture isolates and stocks from 11 endemic countries, from argentina to the usa were characterised, allowing identification of 76 genotypes with 54 polymorphic sites from 123 aligned sequences. on the basis of the microsatellite motif proposed by herrera et al. (2007) to define four haplotypes in colombia, we could classify these genotypes into four distinct tc i sl-ir groups, ... | 2010 | 20670628 |
| chagas disease risk in texas. | chagas disease, caused by trypanosoma cruzi, remains a serious public health concern in many areas of latin america, including méxico. it is also endemic in texas with an autochthonous canine cycle, abundant vectors (triatoma species) in many counties, and established domestic and peridomestic cycles which make competent reservoirs available throughout the state. yet, chagas disease is not reportable in texas, blood donor screening is not mandatory, and the serological profiles of human and cani ... | 2010 | 20957148 |
| identification of bloodmeal sources and trypanosoma cruzi infection in triatomine bugs (hemiptera: reduviidae) from residential settings in texas, the united states. | the host-vector-parasite interactions in chagas disease peridomestic transmission cycles in the united states are not yet well understood. trypanosoma cruzi (kinetoplastida: trypanosomatidae) infection prevalence and bloodmeal sources were determined for adult and immature triatomine (hemiptera: reduviidae) specimens collected from residential settings in central texas. sequenced cytochrome b dna segments obtained from triatomine digestive tract identified nine vertebrate hosts and one invertebr ... | 0 | 24180119 |
| trypanosoma cruzi (agent of chagas disease) in sympatric human and dog populations in "colonias" of the lower rio grande valley of texas. | the zoonotic, vector-borne parasite trypanosoma cruzi causes chagas disease throughout the americas, but human and veterinary health burdens in the united states are unknown. we conducted a cross-sectional prevalence study in indigent, medically underserved human and cohabiting canine populations of seven south texas border communities, known as colonias. defining positivity as those samples that were positive on two or more independent tests, we found 1.3% seroprevalence in 233 humans, includin ... | 2017 | 28167589 |
| epidemiology and molecular typing of trypanosoma cruzi in naturally-infected hound dogs and associated triatomine vectors in texas, usa. | trypanosoma cruzi is the etiologic agent of chagas disease throughout the americas. few population-level studies have examined the epidemiology of canine infection and strain types of t. cruzi that infect canines in the usa. we conducted a cross-sectional study of t. cruzi infection in working hound dogs in south central texas, including analysis of triatomine vectors collected within kennel environments. | 2017 | 28095511 |
| trypanosoma cruzi infection prevalence and bloodmeal analysis in triatomine vectors of chagas disease from rural peridomestic locations in texas, 2013-2014. | protozoan pathogen trypanosoma cruzi (chagas, 1909) is the etiologic agent of chagas disease, which affects millions of people in latin america. recently, the disease has been gaining attention in texas and the southern united states. transmission cycle of the parasite involves alternating infection between insect vectors and vertebrate hosts (including humans, wildlife, and domestic animals). to evaluate vector t. cruzi parasite burden and feeding patterns, we tested triatomine vectors from 23 ... | 2016 | 27106934 |
| trypanosoma cruzi -infected triatoma gerstaeckeri (hemiptera: reduviidae) from nuevo león, méxico, and pathogenicity of the regional strain. | four species of triatomines have been reported in nuevo león, northeast (ne) méxico, but triatoma gerstaeckeri has only been recorded from a peridomestic dwelling. | 2016 | 26849699 |
| agent-based mathematical modeling as a tool for estimating trypanosoma cruzi vector-host contact rates. | the parasite trypanosoma cruzi, spread by triatomine vectors, affects over 100 mammalian species throughout the americas, including humans, in whom it causes chagas' disease. in the u.s., only a few autochthonous cases have been documented in humans, but prevalence is high in sylvatic hosts (primarily raccoons in the southeast and woodrats in texas). the sylvatic transmission of t. cruzi is spread by the vector species triatoma sanguisuga and triatoma gerstaeckeri biting their preferred hosts an ... | 2015 | 26215127 |
| the biology of the triatomine bugs native to south central texas and assessment of the risk they pose for autochthonous chagas disease exposure. | triatomine bugs are a group of hematophagous arthropods that can serve as biological vectors for trypanosoma cruzi , the etiological agent of american trypanosomiasis (chagas disease). because of differences in the biology and feeding habits among triatomine species, some are more likely than others to be involved in zoonotic and/or human-to-human transmission cycles of t. cruzi . in an attempt to assess the risk for chagas disease exposure in south-central texas, human habitations across texas ... | 2015 | 26168214 |
| projected future distributions of vectors of trypanosoma cruzi in north america under climate change scenarios. | chagas disease kills approximately 45 thousand people annually and affects 10 million people in latin america and the southern united states. the parasite that causes the disease, trypanosoma cruzi, can be transmitted by insects of the family reduviidae, subfamily triatominae. any study that attempts to evaluate risk for chagas disease must focus on the ecology and biogeography of these vectors. expected distributional shifts of vector species due to climate change are likely to alter spatial pa ... | 2014 | 24831117 |
| association of trypanosoma cruzi infection with risk factors and electrocardiographic abnormalities in northeast mexico. | american trypanosomiasis is a major disease and public health issue, caused by the protozoan parasite trypanosoma cruzi. the prevalence of t. cruzi has not been fully documented, and there are few reports of this issue in nuevo leon. the aim of this study was to update the seroprevalence rate of t. cruzi infection, including an epidemiological analysis of the risk factors associated with this infection and an electrocardiographic (ecg) evaluation of those infected. | 2014 | 24580840 |
| vector surveillance to determine species composition and occurrence of trypanosoma cruzi at three military installations in san antonio, texas. | chagas disease, also known as american trypanosomiasis, is caused by the hemoflagellate protozoan trypanosoma cruzi which is transmitted by blood-sucking triatomine bugs (hemiptera: reduviidae; triatominae). the disease is endemic to south texas, but exists almost exclusively as a zoonosis. chagas disease has proven to be a serious public health threat to military working dogs. in 2007, seroprevalence of chagas disease in military working dogs in san antonio, texas, reached 8%. a faunal survey w ... | 2012 | 22815160 |
| temporal variation in the abundance and timing of daily activity of chagas disease vector triatoma gerstaeckeri (stål, 1859) in a natural habitat in the lower rio grande valley, south texas. | chagas disease caused by trypanosoma cruzi is a burden to millions of people in south and central america. a sylvatic life cycle of the parasite exists in the southern united states, but recent studies indicate an active peri-domestic life cycle of t. cruzi in texas. the usa-mexico border region in texas displays areas of high poverty and sub-standard housing conditions which are important risk factors for a potential spill-over transmission to a domestic life cycle including humans. the objecti ... | 2017 | 28530845 |
| the biology and vector capability of triatoma sanguisuga texana usinger and triatoma gerstaeckeri (stål) compared with rhodnius prolixus (stål) (hemiptera: triatominae). | | 1970 | 4907991 |
| bionomics and spatial distribution of triatomine vectors of trypanosoma cruzi in texas and other southern states, usa. | defining spatial and temporal occurrences of triatomine vectors of trypanosoma cruzi, the agent of chagas disease, in the us is critical for public health protection. through a citizen science program and field collections from 2012 to 2016, we collected 3,215 triatomines, mainly from texas. using morphological and molecular approaches, we identified seven triatoma species and report sex, length, and blood engorgement status. many citizen-collected triatomines (92.9%) were encountered indoors, i ... | 2018 | 29141765 |
| the biology of triatoma gerstaeckeri. | | 1945 | 21065587 |
| the bloodsucking habits and growth of nymphs of triatoma gerstaeckeri. | | 1945 | 21008230 |