| phylogenesis of relapsing fever borrelia spp. | the phylogenetic relationships of 20 relapsing fever (rf) borrelia spp. were estimated on the basis of the sequences of rrs genes. complete sequences were aligned and compared with previously published sequences, and the similarity values were found to be 97.7 to 99.9%. phylogenetic trees were constructed by using the three neighbor-joining, maximum-parsimony, and maximum-likelihood methods. the results of the comparative phylogenetic analysis divided the rf borrelia spp. into three major cluste ... | 1996 | 8863409 |
| phylogenetic analysis of borrelia species based on flagellin gene sequences and its application for molecular typing of lyme disease borreliae. | we determined almost complete flagellin gene sequences of various borrelia species and aligned them with previously published sequences. a neighbor-joining phylogenetic analysis showed that the genus borrelia was divided into the following three major clusters: new world relapsing fever borreliae (borrelia turicatae, borrelia parkeri, and borrelia hermsii), old world relapsing fever borreliae (borrelia crocidurae, borrelia duttonii, and borrelia hispanica), and lyme disease borreliae (borrelia b ... | 1996 | 8863416 |
| new distribution records of amblyomma americanum (l.) (acari: ixodidae) in new york state. | amblyomma americanum, commonly called the lone star tick, has been widely-distributed in the southeastern united states for many years. distribution of this species apparently did not extend to new york state until the 1970s, after which the northern distribution in new york was limited to long island (suffolk and nassau counties), where it has become locally abundant. since then, there has been just one published record from new york state, in westchester county, just north of new york city. fr ... | 1997 | 9491364 |
| borrelia lonestari infection after a bite by an amblyomma americanum tick. | erythematous rashes that are suggestive of early lyme disease have been associated with the bite of amblyomma americanum ticks, particularly in the southern united states. however, borrelia burgdorferi, the causative agent of lyme disease, has not been cultured from skin biopsy specimens from these patients, and diagnostic serum antibodies usually have not been found. borrelia lonestari sp nov, an uncultured spirochete, has been detected in a. americanum ticks by dna amplification techniques, bu ... | 2001 | 11372036 |
| borrelia lonestari dna in adult amblyomma americanum ticks, alabama. | polymerase chain reaction analysis of 204 amblyomma americanum and 28 a. maculatum ticks collected in august 1999 near the homes of patients with southern tick-associated rash illness and in control areas in choctaw county, alabama, showed borrelia lonestari flagellin gene sequence from two adult a. americanum. the presence of b. lonestari in a. americanum ticks from alabama suggests that this suspected pathogen may be widespread in the southeastern united states. | 2001 | 11384533 |
| the ascendancy of amblyomma americanum as a vector of pathogens affecting humans in the united states. | until the 1990s, amblyomma americanum was regarded primarily as a nuisance species, but a tick of minor importance as a vector of zoonotic pathogens affecting humans. with the recent discoveries of ehrlichia chaffeensis, ehrlichia ewingii, and "borrelia lonestari," the public health relevance of lone star ticks is no longer in question. during the next 25 years, the number of cases of human disease caused by a. americanum-associated pathogens will probably increase. based on current trajectories ... | 2003 | 12414740 |
| detection of borrelia lonestari, putative agent of southern tick-associated rash illness, in white-tailed deer (odocoileus virginianus) from the southeastern united states. | to determine if white-tailed deer may serve as a reservoir host for borrelia lonestari, we used a nested pcr for the borrelia flagellin gene to evaluate blood samples collected from deer from eight southeastern states. seven of 80 deer (8.7%) from 5 of 17 sites (29.4%) had sequence-confirmed evidence of a b. lonestari flagellin gene by pcr, indicating that deer are infected with b. lonestari or another closely related borrelia species. our findings expand the known geographic range of b. lonesta ... | 2003 | 12517884 |
| detection of borrelia lonestari in amblyomma americanum (acari: ixodidae) from tennessee. | genetic sequences characteristic of borrelia lonestari (barbour et al. 1996) were detected in two pools of adult amblyomma americanum (l.) from tennessee, corresponding to an estimated minimum field infection rate of 8.4 infected ticks/1000 adults. dna amplification was conducted using primers derived from the b. lonestari flagellin gene that would also amplify borrelia burgdorferi (johnson, schmid, hyde, steigerwalt, and brenner). species-specific, internal probes were then used to differentiat ... | 2003 | 12597661 |
| evidence of borrelia lonestari dna in amblyomma americanum (acari: ixodidae) removed from humans. | we used a nested pcr with borrelia flagellin gene (flab) primers and dna sequencing to determine if borrelia lonestari was present in amblyomma americanum ticks removed from military personnel and sent to the tick-borne disease laboratory of the u.s. army center for health promotion and preventive medicine. in our preliminary investigation, we detected borrelia sequences in 19 of 510 a. americanum adults and nymphs from ft. a. p. hill, va. during the 2001 tick season, the flab primers were used ... | 2003 | 14662940 |
| dna evidence of borrelia lonestari in amblyomma americanum (acari: ixodidae) in southeast missouri. | amblyomma americanum collected near lake wappapello, missouri, tested positive for borrelia lonestari using polymerase chain reaction and sequence analyses of b. lonestari 16s rrna and flagellin (flab) genes. twelve pools containing a total of 214 nymph or adult ticks contained evidence of infection with b. lonestari (minimum prevalence 5.6%). these data suggest that persons in southeast missouri are at risk for exposure to b. lonestari after a. americanum tick bite, a possible cause of erythema ... | 2003 | 14680133 |
| first culture isolation of borrelia lonestari, putative agent of southern tick-associated rash illness. | southern tick-associated rash illness (stari) is a lyme disease-like infection described in patients in the southeastern and south-central united states, where classic lyme disease is relatively rare. stari develops following the bite of a lone star tick (amblyomma americanum) and is thought to be caused by infection with an "uncultivable" spirochete tentatively named borrelia lonestari. in this study, wild lone star ticks collected from an area where b. lonestari is endemic were cocultured in a ... | 2004 | 15004069 |
| glycerophosphodiester phosphodiesterase gene (glpq) of borrelia lonestari identified as a target for differentiating borrelia species associated with hard ticks (acari:ixodidae). | a glpq ortholog was identified in dna from borrelia lonestari-positive amblyomma americanum, providing further evidence that b. lonestari is more closely related to the relapsing fever group spirochetes than to borreliae that cause lyme disease. this finding provides a basis for developing diagnostic assays to differentiate species of borrelia transmitted by hard ticks. | 2004 | 15131225 |
| disease agents in amblyomma americanum from northeastern georgia. | amblyomma americanum (lone star tick) is known or suspected to vector several organisms that are implicated as human pathogens, including ehrlichia chaffeensis, e. ewingii, and borrelia lonestari. these three agents have also been detected in white-tailed deer (odocoileus virginianus). because northeastern georgia has a high abundance of both lone star ticks and white-tailed deer, and one of these organisms, e. chaffeensis, is already known to be endemic in the area, we assayed individual adult ... | 2004 | 15311471 |
| borrelia species in host-seeking ticks and small mammals in northern florida. | the aim of this study was to improve understanding of several factors related to the ecology and environmental risk of borrelia infection in northern florida. small mammals and host-seeking adult ticks were collected at several sites, and specimens were tested for the presence of borrelia species, primarily by pcr amplification. tissues from some vertebrates and ticks were initially cultured in bsk-h medium to isolate spirochetes, but none were recovered. however, comparison of partial flagellin ... | 2004 | 15528699 |
| microbiologic evaluation of patients from missouri with erythema migrans. | borrelia lonestari infects amblyomma americanum, the tick species that is the most common cause of tick bites in southeast and south-central united states, and this spirochete has been detected in an erythema migrans (em)-like skin rash in 1 patient. therefore, b. lonestari is considered to be a leading candidate for the etiologic agent of em in this region. | 2005 | 15668867 |
| improving the specificity of 16s rdna-based polymerase chain reaction for detecting borrelia burgdorferi sensu lato-causative agents of human lyme disease. | 16s rdna sequences of borrelia burgdorferi sensu lato were aligned with the 16s rdna sequences of borrelia hermsii, borrelia turicatae, and borrelia lonestari in order to identify primers that might be used to more specifically identify agents of human lyme disease in ticks in human skin samples. | 2005 | 15752343 |
| relative encounter frequencies and prevalence of selected borrelia, ehrlichia, and anaplasma infections in amblyomma americanum and ixodes scapularis (acari: ixodidae) ticks from central new jersey. | to evaluate their relative importance in tick-borne disease transmission in new jersey, host-seeking amblyomma americanum (l.) and ixodes scapularis say adults and nymphs were collected during spring activity periods in 2003 and 2004 to determine relative frequencies at which these ticks were encountered from an area known to be hyperendemic for lyme disease. although similar numbers of the two species were encountered during early spring of both years, a. americanum were encountered more often ... | 2005 | 15962799 |
| rapid detection methods and prevalence estimation for borrelia lonestari glpq in amblyomma americanum (acari: ixodidae) pools of unequal size. | dna was extracted from pools of amblyomma americanum ticks collected from vegetation at two sites in fort leonard wood, missouri and tested for the presence of borrelia spp. two new methods were developed to detect borrelia lonestari dna by targeting the glycerophosphodiester phosphodiesterase (glpq) gene. the first method detected b. lonestari dna using a sybr green i melting curve analysis of the pcr product obtained with glpq gene primers. the second method, a glpq taqman assay, detected and ... | 2005 | 16011431 |
| bacteriocidal activity of lizard and mouse serum for borrelia lonestari, putative agent of a lyme-like illness (aka stari or masters disease) in missouri. | to determine responses of borrelia lonestari and borrelia burgdorferi to eastern fence lizard (sceloporus undulatus) and swiss-webster mouse (mus musculus) sera. | 2005 | 16259394 |
| white-tailed deer (odocoileus virginianus) develop spirochetemia following experimental infection with borrelia lonestari. | borrelia lonestari is considered a putative agent of southern tick-associated rash illness (stari) and is known to occur naturally only in lone star ticks (amblyomma americanum) and white-tailed deer (odocoileus virginianus). we used a low passage isolate of b. lonestari (ls-1) to inoculate white-tailed deer, c3h mice, holstein cattle, and beagles. animals were monitored via examination of giemsa and acridine orange stained blood smears, polymerase chain reaction (pcr), indirect fluorescent anti ... | 2006 | 16459029 |
| three multiplex assays for detection of borrelia burgdorferi sensu lato and borrelia miyamotoi sensu lato in field-collected ixodes nymphs in north america. | two hundred fifty new jersey field-collected ixodes scapularis say ticks and 17 colorado ixodes spinipalpis hadwen & nuttall ticks were tested using three separate multiplex real-time polymerase chain reaction (pcr) assays. one assay targets the rrs-rrla igs region of borrelia spp. to detect borrelia burgdorferi sensu lato (s.l.) and borrelia miyamotoi s.l. the second assay targets the ospa region of b. burgdorferi s.l. to detect b. burgdorferi sensu stricto (s.s.), borrelia bissettii, and borre ... | 2005 | 16465748 |
| borrelia, coxiella, and rickettsia in carios capensis (acari: argasidae) from a brown pelican (pelecanus occidentalis) rookery in south carolina, usa. | argasid ticks are vectors of viral and bacterial agents of humans and animals. carios capensis, a tick of seabirds, infests the nests of brown pelicans, pelecanus occidentalis, and other ground nesting birds along the coast of south carolina. this tick is associated with pelican nest abandonment and could pose a threat to humans visiting pelican rookeries if visitors are exposed to ticks harboring infectious agents. we collected ticks from a pelican rookery on deveaux bank, south carolina and sc ... | 2006 | 16821092 |
| serologic evaluation of patients from missouri with erythema migrans-like skin lesions with the c6 lyme test. | southern tick-associated rash illness (stari), also known as masters disease, affects people predominantly in the southeast and south central united states. these patients exhibit skin lesions that resemble erythema migrans (em), the characteristic skin lesion in early lyme disease. the etiology of stari remains unknown, and no serologic test is available to aid in its diagnosis. the c6 lyme enzyme-linked immunosorbent assay was used to evaluate coded serum specimens from patients with stari at ... | 2006 | 17028220 |
| prevalence of ehrlichia, borrelia, and rickettsial agents in amblyomma americanum (acari: ixodidae) collected from nine states. | ambyomma americanum (l.) (acari: ixodidae) is an aggressive tick that feeds on humans during all postembryonic life stages. in many regions of the united states, it is the tick most commonly found attached to humans. public health interest has grown recently, due to the recognition of new human pathogens transmitted by a. americanum and the expanding distribution of the tick. a. americanum is a vector of several bacteria pathogenic to humans. ehrlichia chaffeensis and ehrlichia ewingii cause mod ... | 2006 | 17162962 |
| transmission of bacterial agents from lone star ticks to white-tailed deer. | amblyomma americanum (l.), the lone star tick, is an aggressive ixodid tick that has been implicated as a vector for several bacteria. among these bacteria are the disease agents ehrlichia chaffeensis and ehrlichia ewingii, and the putative disease agent "borrelia lonestari." the hypothesis in this study was that wild lone star ticks from northeastern georgia are capable of transmitting all three agents to white-tailed deer, odocoileus virginianus, a known reservoir host for e. chaffeensis. in t ... | 2007 | 17547234 |
| ecological havoc, the rise of white-tailed deer, and the emergence of amblyomma americanum-associated zoonoses in the united states. | two infectious diseases, and one presumably infectious disease, each vectored by or associated with the bite of the lone star tick (amblyomma americanum), were identified and characterized by clinicians and scientists in the united states during the 1980s and 1990s. these three conditions-human monocytic (or monocytotropic) ehrlichiosis (hme), ehrlichia ewingii ehrlichiosis, and southern tick-associated rash illness (stari)-undoubtedly existed in the united states prior to this time. however, th ... | 2007 | 17848069 |
| rickettsia amblyommii infecting amblyomma americanum larvae. | polymerase chain reaction analysis of amblyomma americanum adults, nymphs, and larvae from aberdeen proving ground, md (apg), revealed a very high prevalence of a spotted fever group (sfg) rickettsia. restriction fragment length polymorphism (rflp) and sequence analysis identified "rickettsia amblyommii." this organism is not yet described or well studied, and its pathogenicity is unknown; however, investigations of the organism are warranted because of its high prevalence in a. americanum. this ... | 2008 | 18171102 |
| experimental and field studies on the suitability of raccoons (procyon lotor) as hosts for tick-borne pathogens. | we investigated the experimental susceptibility and natural exposure of raccoons (procyon lotor) to five tick-borne pathogens of human and veterinary importance, ehrlichia canis, e. chaffeensis, e. ewingii, anaplasma phagocytophilum (apvariant 1 and ap-ha hge-1 strains), and borrelia lonestari. infections were assessed by polymerase chain reaction (pcr), indirect fluorescent antibody (ifa) testing, and/or culture isolation methods for at least 30 days postinoculation (dpi). two e. chaffeensis-in ... | 2008 | 18429696 |
| stari, or masters disease: lone star tick-vectored lyme-like illness. | lyme-like illness (also known as southern tick-associated rash illness [stari] or masters disease) is vectored by the lone star tick (amblyomma americanum). lyme-like illness lesions, which are similar to the erythema migrans rash of lyme disease, tend to have lymphocytic dermal infiltrates. with the exception of borrelia lonestari, the possible causative agent or agents of lyme-like illness have not been cultured. more research is needed to fully understand this newly recognized zoonosis. clini ... | 2008 | 18452807 |
| detection of borrelia burgdorferi and borrelia lonestari in birds in tennessee. | lyme disease in the united states is caused by the bacterial spirochete borrelia burgdorferi s.s. (johnson, schmid, hyde, steigerwalt, and brenner), which is transmitted by tick vectors ixodes scapularis (say) and i. pacificus (cooley and kohls). borrelia lonestari, transmitted by the tick amblyomma americanum l., may be associated with a related syndrome, southern tick-associated rash illness (stari). borrelia lonestari sequences, reported primarily in the southeastern states, have also been de ... | 2009 | 19198527 |
| microbial communities and interactions in the lone star tick, amblyomma americanum. | to quantify microbial composition and interactions, we identified prokaryotic communities in the lone star tick (amblyomma americanum) based on 16s rrna gene sequences and direct probing. the lone star tick is the vector of emerging diseases and host to additional symbionts of unknown activity, and is representative of other blood-sucking arthropods. we evaluated the potential for vertical (transovarial) transmission by molecular analysis of microbial symbionts from egg and larval clutches. dire ... | 2008 | 19378409 |
| prospective health assessment of fort campbell, kentucky patrons bitten by ticks. | amblyomma americanum is an aggressive human-biting tick that transmits several known human pathogens and is associated with a lyme disease-like illness of unknown etiology. to determine the frequency, distinguishing clinical characteristics, and etiology ofa. americanum-associated illness and identify associated risk factors, a prospective study of adult tick-bite victims was conducted at fort campbell from 2005-2007. forty-two participants submitted ticks, none of which contained borrelia lones ... | 2009 | 19485114 |
| [stari--a new tick borne spirochetosis]. | southern tick associated rash illness (stari), also known as masters disease is caused by borrelia lonestari spirochetes and it is transmitted by amblyomma americanum tick. early symptoms of stari are similar to early lyme borreliosis (skin rash resembling erythema migrans). in diagnostic of stari traditional methods are not effective. the decision of antibiotic treatment (similar to lyme borreliosis) still remain based on clinical picture. | 2009 | 19522220 |
| distribution of antibodies reactive to borrelia lonestari and borrelia burgdorferi in white-tailed deer (odocoileus virginianus) populations in the eastern united states. | southern tick-associated rash illness is a lyme-like syndrome that occurs in the southern states. borrelia lonestari, which has been suggested as a possible causative agent of southern tick-associated rash illness, naturally infects white-tailed deer (wtd; odocoileus virginianus) and is transmitted by the lone star tick (amblyomma americanum). to better understand the prevalence and distribution of borrelia exposure among wtd, we tested wtd from 21 eastern states for antibodies reactive to b. lo ... | 2009 | 19874183 |
| population genetics of amblyomma americanum (acari: ixodidae) collected from arkansas. | lone star ticks, amblyomma americanum l. (acari: ixodidae),infest multiple hosts such as birds, and mammals of various sizes (rodents to white-tailed deer) and can harbor human pathogens such as borrelia lonestari and ehrlichiosis chaffeensis. the population structure of 251 a. americanum ticks, collected from canines and two white-tailed deer in six arkansas ecoregions, was examined using dna sequences of a 247-bp region of the mitochondrial dna ribosomal rna 16s gene. of the 247 nucleotide cha ... | 2010 | 20380295 |
| bacterial pathogens in ixodid ticks from a piedmont county in north carolina: prevalence of rickettsial organisms. | in north carolina, reported human cases of tick-borne illness, specifically rocky mountain spotted fever, have escalated over the past decade. to determine the relative abundance of vectors and to estimate the risk of acquiring a tick-borne illness in peri-residential landscapes, ticks were collected in chatham county, a typical piedmont county and, samples of the ticks were tested for infection with selected bacterial pathogens using real-time quantitative polymerase chain reaction assays. tick ... | 2010 | 20455778 |
| sdetection of vector-borne agents in lone star ticks, amblyomma americanum (acari: ixodidae), from mississippi. | in this study, we evaluated amblyomma americanum (lone star tick) in mississippi for the presence of ehrlichia chaffeensis, causative agent of human monocytic ehrlichiosis; ehrlichia ewingii, causative agent of human and canine granulocytic ehrlichiosis; borrelia lonestari, putative agent of southern tick-associated rash illness; francisella tularensis, the agent of tularemia; and rickettsia spp., particularly r. amblyommii, a suspected pathogen. we collected adult a. americanum from four region ... | 2010 | 20496596 |
| tick-borne disease agents in various wildlife from mississippi. | because tick-borne diseases are becoming increasingly important throughout the world, monitoring their causative agents in wildlife may serve as a useful indicator of potential human exposure. we assessed the presence of known and putative zoonotic, tick-borne agents in four wildlife species in mississippi. animals were tested for exposure to or infection with ehrlichia chaffeensis, ehrlichia ewingii, borrelia lonestari, rickettsia spp., anaplasma phagocytophilum, and francisella tularensis. who ... | 2011 | 20846016 |
| [genetic features of borrelia miyamotoi transmitted by ixodes persulcatus]. | the definition and molecular typing of borrelia miyamotoi transmitted by the ixodes persuccatus ticks was based on the partial sequencing of the 16s rrna, p66, and glpq genes. all the b. miyamotoi analyzed sequences of the 16s rrna, glpq, and p66 gene fragments from i. persulcatus were identical and had 99.9-100% similarity to corresponding genes of the b. miyamotoi strain fr64b isolated in japan. the analyzed amino acid sequences revealed that the 66 protein b. miyamotoi in the site correspondi ... | 2011 | 21786631 |
| Geographical distribution and prevalence of selected Borrelia, Ehrlichia, and Rickettsia infections in Amblyomma americanum (Acari: Ixodidae) in New Jersey. | We used published accounts to describe the known statewide distribution of the lone star tick, Amblyomma americanum, in New Jersey and field surveys to characterize the geographical range of A. americanum and selected A. americanum-transmitted pathogens in Monmouth County, the hypothesized northern limit of the species distribution. Ticks were collected using standardized methods from 50 widely dispersed public access areas within 18 municipalities to produce estimates of relative abundance amon ... | 2011 | 22017087 |
| Infection prevalences of common tick-borne pathogens in adult lone star ticks (Amblyomma americanum) and American dog ticks (Dermacentor variabilis) in Kentucky. | Rocky Mountain spotted fever, Lyme disease, and ehrlichiosis are tick-borne diseases that are reported annually in Kentucky. We conducted a survey to describe infection prevalence of tick-borne pathogens in Amblyomma americanum and Dermacentor variabilis ticks collected in Kentucky. During 2007-2008, we collected 287 ticks (179 D. variabilis and 108 A. americanum) from canine, feral hog, horse, raccoon, white-tailed deer, and human hosts in six counties in Kentucky. Ticks were screened for Ricke ... | 2011 | 21976578 |
| 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 |
| borrelia burgdorferi not confirmed in human-biting amblyomma americanum ticks from the southeastern united states. | the predominant human-biting tick throughout the southeastern united states is amblyomma americanum. its ability to transmit pathogens causing lyme disease-like illnesses is a subject of ongoing controversy. results of previous testing by the department of defense human tick test kit program and other laboratories indicated that it is highly unlikely that a. americanum transmits any pathogen that causes lyme disease. in contrast, a recent publication by clark and colleagues (k. l. clark, b. leyd ... | 2015 | 25788545 |
| phylogeny of a relapsing fever borrelia species transmitted by the hard tick ixodes scapularis. | the discovery of borrelia species that were related to the agents of relapsing fever but were transmitted by hard ticks rather than soft ticks challenged previous taxonomies based largely on microbe-host specificities and geographic considerations. one of these newly-identified organisms is the borrelia miyamotoi sensu lato strain lb-2001 from north america and transmitted by ixodes scapularis. this or related strains have been identified as the cause of human disease, but comparatively little i ... | 2014 | 24813576 |
| differentiated thp-1 cells exposed to pathogenic and nonpathogenic borrelia species demonstrate minimal differences in production of four inflammatory cytokines. | tick-borne borreliae include lyme disease and relapsing fever agents, and they are transmitted primarily by ixodid (hard) and argasid (soft) tick vectors, respectively. tick-host interactions during feeding are complex, with host immune responses influenced by biological differences in tick feeding and individual differences within and between host species. one of the first encounters for spirochetes entering vertebrate host skin is with local antigen-presenting cells, regardless of whether the ... | 2016 | 27680384 |
| borrelia burgdorferi dna absent, multiple rickettsia spp. dna present in ticks collected from a teaching forest in north central florida. | tick-borne diseases are an emerging public health threat in the united states. in florida, there has been public attention directed towards the possibility of locally acquired borrelia burgdorferi sensu stricto, the causative agent of lyme disease, in association with the lone star tick. the aim of this study was to determine the prevalence of ticks and the pathogens they carry and potentially transmit, such as b. burgdorferi, in a highly utilized teaching and research forest in north central fl ... | 2017 | 27720381 |
| detection of borrelia, ehrlichia, and rickettsia spp. in ticks in northeast missouri. | we evaluated amblyomma americanum (lone star tick) and dermacentor variabilis (american dog tick) in northeast missouri for the presence of borrelia, ehrlichia, and rickettsia bacteria. we collected actively questing ticks from four sites within adair county, missouri. a total of 15,162 ticks were collected, of which 13,980 were grouped in 308 pools (lone star ticks, 288 pools; american dog ticks, 20 pools) and tested for presence/absence of bacteria using polymerase chain reaction. infection ra ... | 2016 | 27133163 |
| prevalence of tick-borne pathogens in host-seeking amblyomma americanum (acari: ixodidae) and odocoileus virginianus (artiodactyla: cervidae) in florida. | amblyomma americanum (l.), the lone star tick, is an aggressive tick that is expanding its geographic range within the united states. this tick is the vector for the human and veterinary pathogens ehrlichia chaffeensis and ehrlichia ewingii and is associated with other microbes of unspecified pathogenicity including rickettsia amblyommii, panola mountain ehrlichia, and borrelia lonestari in florida, there has been sparse contemporary data on the prevalence of these organisms in host-seeking lone ... | 2016 | 27117680 |
| note on ehrlichia chaffeensis, ehrlichia ewingii, and "borrelia lonestari" infection in lone star ticks (acari: ixodidae), nebraska, usa. | the lone star tick, amblyomma americanum (l.) (acari: ixodidae), is established in southeastern nebraska yet the prevalence of tick-associated microorganisms is not known. an initial pcr-based analysis for ehrlichia chaffeensis, ehrlichia ewingii, and borrelia infection in host-seeking adult ticks collected in southeast nebraska was conducted. a total of 251 adult ticks collected in six sites in southeast nebraska were tested. e. chaffeensis, e. ewingii, and borrelia spp. were present, and the p ... | 2016 | 26515060 |
| detection of bacterial agents in amblyomma americanum (acari: ixodidae) from georgia, usa, and the use of a multiplex assay to differentiate ehrlichia chaffeensis and ehrlichia ewingii. | amblyomma americanum, the lone star tick, is the most common and most aggressive human biting tick in the southeastern united states. it is known to transmit the agents of human ehrlichioses, ehrlichia chaffeensis and ehrlichia ewingii. in addition, it carries agents of unspecified pathogenicity to humans, including rickettsia amblyommii, borrelia lonestari, and the newly emerging panola mountain ehrlichia (pme). surveillance of these ticks for recognized or emerging pathogens is necessary for a ... | 2014 | 25118421 |
| a relapsing fever group borrelia sp. similar to borrelia lonestari found among wild sika deer (cervus nippon yesoensis) and haemaphysalis spp. ticks in hokkaido, japan. | a relapsing fever borrelia sp. similar to borrelia lonestari (herein referred to as b. lonestari-like) was detected from wild sika deer (cervus nippon yesoensis) and haemaphysalis ticks in the eastern part of hokkaido, japan. the total prevalence of this borrelia sp. in tested deer blood samples was 10.6% using conventional pcr and real-time pcr. the prevalence was significantly higher in deer fawns compared to adults (21.9% and 9.4%, respectively). additionally, there was significant regional d ... | 2014 | 25108784 |