| isolation of borrelia burgdorferi from arthropods collected in texas. | the texas department of health laboratory cultured arthropods from november 1988 through december 1989 in an attempt to isolate borrelia burgdorferi, the etiologic agent of lyme disease. spirochetes were isolated from eight of 1,093 pools of arthropods cultured. the spirochetal isolates were from several tick and one flea species, including amblyomma americanum, a. maculatum, ixodes scapularis, and ctenocephalides felis. these 8 isolates reacted specifically when treated with monoclonal antibodi ... | 1991 | 2063950 |
| identification of an uncultivable borrelia species in the hard tick amblyomma americanum: possible agent of a lyme disease-like illness. | bites from the hard tick amblyomma americanum are associated with a lyme disease-like illness in the southern united states. to identify possible etiologic agents for this disorder, a. americanum ticks were collected in missouri, texas, new jersey, and new york and examined microscopically. uncultivable spirochetes were present in approximately 2% of the ticks. borrelia genus-specific oligonucleotides for the flagellin and 16s rrna genes were used for amplification of dna. products were obtained ... | 1996 | 8568302 |
| lyme borreliosis in the southern united states: a review. | lyme borreliosis (lyme disease) is the most often reported arthropod transmitted disease in humans in the u.s.a. although it has been reported from 43 states, cases are especially abundant in the mid-atlantic and northeastern regions. borrelia burgdorferi, the etiologic agent, is transmitted primarily by the western blacklegged tick (ixodes pacificus) in far western north america, and by the blacklegged tick (ixodes scapularis) in eastern north america. although lyme disease cases have been repo ... | 1996 | 8973401 |
| ability of the lyme disease spirochete borrelia burgdorferi to infect rodents and three species of human-biting ticks (blacklegged tick, american dog tick, lone star tick) (acari:ixodidae). | the infectivity of a diverse collection of borrelia burgdorferi strains from north america for mice was determined as a prelude to vector competence experiments with the 3 primary human-biting tick species in the eastern united states (ixodes scapularis say, dermacentor variabilis (say), amblyomma americanum (l.)]. of the 34 b. burgdorferi strains inoculated into mice, 29 were infectious; the exceptions were 5 isolates from texas. vector competence experiments were conducted with 2 strains from ... | 1997 | 9220680 |
| genetic heterogeneity of borrelia burgdorferi sensu lato in the southern united states based on restriction fragment length polymorphism and sequence analysis. | fifty-six strains of borrelia burgdorferi sensu lato, isolated from ticks and vertebrate animals in missouri, south carolina, georgia, florida, and texas, were identified and characterized by pcr-restriction fragment length polymorphism (rflp) analysis of rrf (5s)-rrl (23s) intergenic spacer amplicons. a total of 241 to 258 bp of intergenic spacers between tandemly duplicated rrf (5s) and rrl (23s) was amplified by pcr. msei and drai restriction fragment polymorphisms were used to analyze these ... | 2001 | 11427560 |
| implications of climate change on the distribution of the tick vector ixodes scapularis and risk for lyme disease in the texas-mexico transboundary region. | disease risk maps are important tools that help ascertain the likelihood of exposure to specific infectious agents. understanding how climate change may affect the suitability of habitats for ticks will improve the accuracy of risk maps of tick-borne pathogen transmission in humans and domestic animal populations. lyme disease (ld) is the most prevalent arthropod borne disease in the us and europe. the bacterium borrelia burgdorferi causes ld and it is transmitted to humans and other mammalian h ... | 2014 | 24766735 |
| exploratory spatial analysis of lyme disease in texas -what can we learn from the reported cases? | lyme disease (ld) is a tick-borne zoonotic illness caused by the bacterium borrelia burgdorferi. texas is considered a non-endemic state for ld and the spatial distribution of the state's reported ld cases is unknown. | 2015 | 26386670 |
| spirochetemia caused by borrelia turicatae infection in 3 dogs in texas. | spirochetemia was diagnosed in 2 siberian huskies and a rottweiler from the northwestern region of texas between june 1999 and october 2001. clinical findings were nonspecific; tick exposure was documented in 2 of the dogs. hematologic abnormalities included anemia (n=2), neutrophilia (n=2, including 1 with a left shift), lymphopenia (n=3), eosinopenia (n=3), and thrombocytopenia (n=2). one anemic dog had a positive coombs' test. in 1 dog, western blot analysis of serum yielded multiple positive ... | 2007 | 17523100 |
| detection of babesia and anaplasma species in rabbits from texas and georgia, usa. | rabbits have been shown to harbor a suite of zoonotic organisms, including a babesia species, borrelia burgdorferi, and anaplasma phagocytophilum. in this study, we conducted a molecular survey for various tick-borne pathogens in three species of rabbits from texas and georgia. of 18 black-tailed jackrabbits (lepus californicus) tested from texas, six (28%) were polymerase chain reaction (pcr) positive for babesia, and nucleotide sequencing revealed two distinct species or strains. two jackrabbi ... | 2006 | 16584322 |
| 'lyme disease': ancient engine of an unrecognized borreliosis pandemic? | unexpectedly we have found large numbers of chronically ill borrelia burgdorferi pcr- and seropositive patients in houston, texas, a zoonotically 'non-endemic' area. in order to understand this finding prior to sufficient data availability, we chose to examine critically currently accepted but troublesome 'lyme disease' concepts. our method was to analyze each foundation 'lyme disease' premise within the context of available medical and veterinary literature, then to reconstruct the disease mode ... | 2003 | 12710914 |
| a proposal for the reliable culture of borrelia burgdorferi from patients with chronic lyme disease, even from those previously aggressively treated. | since culture of borrelia burgdorferi from patients with chronic lyme disease has been an extraordinarily rare event, clarification of the nature of the illness and proving its etiology as infectious have been difficult. a method for reliably and reproducibly culturing b. burgdorferi from the blood of patients with chronic lyme disease was therefore sought by making a controlled blood culture trial studying 47 patients with chronic lyme disease. all had relapsed after long-term oral and intraven ... | 1998 | 9861561 |
| parasites and selected diseases of collared peccaries (tayassu tajacu) in the trans-pecos region of texas. | fifty-five collared peccaries (tayassu tajacu) were collected from october 1988 through april 1991 from five counties within the trans-pecos region of texas (usa) to monitor for diseases and parasites. no endoparasites were recovered on gross examination. antibody to borrelia burgdorferi was documented in one (2%) of 55 specimens. three (6%) of 54 collared peccaries were positive for yersinia pestis antibodies. all collared peccaries were negative for antibodies against brucella spp., francisell ... | 1996 | 8827690 |
| isolation of borrelia spirochetes from patients in texas. | the texas department of health laboratory began culturing the lyme disease spirochete borrelia burgdorferi in 1985. this organism was subsequently isolated from blood, cerebrospinal fluid, joint fluid, skin, bone, and autopsy tissues from humans. fluorescent-antibody tests with murine monoclonal antibodies confirmed that seven of these isolates were b. burgdorferi and that two others belonged to the genus borrelia. | 1987 | 3611307 |
| borrelia sp. infection in coyotes, black-tailed jack rabbits and desert cottontails in southern texas. | coyotes (canis latrans) from southern texas were sampled for antibodies to borrelia burgdorferi from 1980 to 1986; black-tailed jack rabbits (lepus californicus) and desert cottontails (sylvilagus audubonii) were sampled in 1986. coyote fetuses, adult coyote kidneys, and black-tailed jack rabbit and desert cottontail kidneys were cultured for b. burgdorferi in 1986. results of indirect immunofluorescent antibody (ifa) tests for b. burgdorferi in coyotes were as follows (number positive at a dilu ... | 1989 | 2644452 |
| clinical and epizootiologic characteristics of dogs seropositive for borrelia burgdorferi in texas: 110 cases (1988). | of 2,409 canine serum samples submitted to the texas veterinary medical diagnostic laboratory between jan 1, 1988 and dec 31, 1988 and tested by immunofluorescent antibody technique for antibody to borrelia borgdorferi, 132 (5.5%) had positive results. clinical and epizootiologic characteristics of seropositive dogs from texas (n = 110) were examined. male dogs were more likely than female dogs to be seropositive for b burgdorferi. the most frequent clinical sign of disease described in seroposi ... | 1990 | 2228777 |
| serologic survey of selected zoonotic disease agents in black-tailed jack rabbits from western texas. | a serologic survey for the agents of rocky mountain spotted fever (rmsf) (rickettsia rickettsii), borrelia spp. including the causative agent for lyme disease (borrelia burgdorferi), and plague (yersinia pestis) was conducted on blood samples collected from 30 and 46 black-tailed jack rabbits (lepus californicus) from an urban environment in lubbock, texas (usa) during winter 1987 and the following spring 1988, respectively. antibody titers to the agents of rmsf and borreliosis were detected in ... | 1990 | 2106044 |
| from the centers for disease control. self-induced malaria associated with malariotherapy for lyme disease--texas. | | 1991 | 1920712 |
| update: self-induced malaria associated with malariotherapy for lyme disease--texas. | in december 1990, the texas department of health (tdh) was contacted by a man who had recently moved from the northeastern united states and who was considering malariotherapy for lyme disease (ld). he described a 2-year history of unsuccessful treatment with multiple antibiotics for arthralgias and palpitations, which had been diagnosed as ld. | 1991 | 1896006 |
| seroprevalence of antibodies to borrelia burgdorferi in a population of horses in central texas. | four hundred sixty-nine serum samples were obtained from horses admitted to the internal medicine service of the texas veterinary medical center between jan 1 and dec 31, 1990. serum samples were tested by elisa for antibody to borrelia burgdorferi. of these 469 samples, 1 (0.2%) was repeatedly seropositive for the organism by elisa. confirmatory testing by protein immunoblot was negative. the observed seroprevalence was 0%; the upper bound of the 95% confidence interval was 0.6%. these findings ... | 1992 | 1429127 |
| a determination of the spatial concordance between lyme disease incidence and habitat probability of its primary vector ixodes scapularis (black-legged tick). | the spatial distribution of ixodes scapularis, the most common tick vector of the bacterium borrelia burgdorferi, the cause of lyme disease in humans, has not been studied previously in texas, united states of america. it has only rarely been reported in this state, so its local, spatial relationship to the distribution of this disease is unknown. from an epidemiological perspective, one would tend to hypothesise that there should be a high degree of spatial concordance between habitat suitabili ... | 2014 | 25545937 |
| prevalence of antibodies to spotted fever group rickettsia spp. and ehrlichia spp. in coyotes (canis latrans) in oklahoma and texas, usa. | coyotes (canis latrans) are commonly infested with ticks, including amblyomma americanum, the predominant vector of ehrlichia chaffeensis and ehrlichia ewingii; dermacentor variabilis, an important vector of rickettsia rickettsii; and amblyomma maculatum, a major vector of rickettsia parkeri, a spotted fever group (sfg) rickettsia. to determine the degree to which coyotes are infected with or exposed to tick-borne bacterial disease agents, serum samples collected from coyotes in oklahoma and tex ... | 2013 | 23778619 |
| vector potential and population dynamics for amblyomma inornatum. | we studied the natural life cycle of amblyomma inornatum and its vector potential in south texas. this tick is distributed throughout south texas and most of central america. a. inornatum represented 1.91% of the ticks collected by carbon dioxide traps during a study of free-living ticks in the tamaulipan biotic province in south texas. the life cycle of a. inornatum in south texas showed a clear seasonal pattern consistent with one generation per year. nymphs emerged in the spring with a peak i ... | 2015 | 25881916 |
| babesia canis rossi infection in a texas dog. | a 5-month-old intact male boerboel dog, imported from south africa 1 week previously, was presented to a texas veterinarian for lethargy, anorexia, and labored breathing. the dog was febrile, anemic, leukopenic, thrombocytopenic, and slightly azotemic. results of the idexx snap-4dx enzyme immunoassay were negative for dirofilaria immitis antigen and antibodies against ehrlichia canis, borrelia burgdorferi, and anaplasma phagocytophilum. an edta blood sample analyzed at oklahoma state university ... | 2011 | 21790699 |
| lyme disease in texas. | | 1987 | 3591105 |