| white-tailed deer as a potential reservoir of ehrlichia spp. | we determined the antibody prevalence to ehrlichia spp., in white-tailed deer (odocoileus virginianus) and the geographic distribution of seropositive animals in 84 counties in alabama, arkansas, florida, georgia, illinois, kentucky, louisiana, maryland, massachusetts, mississippi, missouri, north carolina, south carolina, tennessee, texas, virginia, and west virginia (usa). using an indirect fluorescent antibody test we detected antibodies (> or = 1:128) to this bacterium in 544 (43%) of 1269 d ... | 1994 | 8028099 |
| polymerase chain reaction evidence of ehrlichia chaffeensis, an etiologic agent of human ehrlichiosis, in dogs from southeast virginia. | to ascertain whether dogs are naturally infected with ehrlichia chaffeensis. | 1996 | 8836370 |
| prospective study of equine colic risk factors. | a 1 year prospective study was conducted on 31 horse farms to identify risk factors for equine colic. farms were randomly selected from a list from 2 adjacent counties of virginia and maryland, usa. the association between colic and farm or individual horse risk factors related to management, housing, pasture, use, nutrition, health and events was first examined by univariate statistical analysis. individually significant (p < = 0.25 for farm factors, p < = 0.10 for horse factors) variables were ... | 1997 | 9413718 |
| granulocytic ehrlichiosis in dogs from north carolina and virginia. | medical records of 3 dogs from north carolina and 3 dogs from virginia with ehrlichial morulae in circulating neutrophils were studied retrospectively. two clinically distinct disease syndromes, including chronic, moderate to severe anemia (n = 3) and polyarthritis (n = 2) were associated with canine granulocytic ehrlichiosis (cge) in these dogs. one dog was clinically healthy, and abnormalities were not detected during physical examination. clinical signs were nonspecific and included fever, le ... | 1998 | 9560760 |
| sequential evaluation of dogs naturally infected with ehrlichia canis, ehrlichia chaffeensis, ehrlichia equi, ehrlichia ewingii, or bartonella vinsonii. | historically, disease manifestations in dogs seroreactive to ehrlichia canis antigens by indirect immunofluorescent antibody testing have been attributed to infection with either e. canis or ehrlichia ewingii. a 1996 study by dawson and colleagues provided pcr evidence that healthy dogs from southeastern virginia could be naturally infected with ehrlichia chaffeensis. this observation stimulated us to determine which ehrlichia spp. infected sick dogs that were referred to our hospital from the s ... | 1998 | 9705408 |
| a retrospective study of ehrlichiosis in 62 dogs from north carolina and virginia. | the purpose of this retrospective study is to report the clinical signs, clinicopathological findings, and response to therapy of 62 dogs from north carolina and virginia. ehrlichiosis was diagnosed in all of these dogs, and previous retrospective studies of ehrlichiosis in dogs were used as a basis for comparison. in this study, the clinical signs commonly associated with ehrlichiosis were observed less frequently than in earlier studies, although previously reported laboratory abnormalities we ... | 1999 | 10357108 |
| seroprevalence of ehrlichia canis, ehrlichia equi, and ehrlichia risticii in sick dogs from north carolina and virginia. | ehrlichia canis, e. equi, and e. risticii seroprevalence was determined by microimmunofluorescent antibody testing (ifa) in a sequential population of 1,845 sick dogs admitted during a 1-year period to the north carolina state university veterinary teaching hospital. a seroreactor was defined by a reciprocal ifa titer of > or =80 to e. canis, e. equi, or e. risticii antigens. of the 48 ifa seroreactors, 44 dogs were seroreactive to e. canis, 21 to e. equi, and 0 to e. risticii. seventeen dogs re ... | 2000 | 10668817 |
| a naval academy midshipman with ehrlichiosis after summer field exercises in quantico, virginia. | a case of human ehrlichiosis (caused by infection with ehrlichia chaffeensis) is presented. the patient was a female naval academy midshipman with a 26-day history of daily field training with the u.s. marines near quantico, virginia. she presented with a several-day history of myalgias, fever, and frontal headache. during her clinical course, she developed fever to 104 degrees f, dry cough, dyspnea on exertion, arthralgias, and nephrotic syndrome. she did not develop a rash. laboratory studies ... | 2001 | 11272720 |
| reactivity of serum samples of dogs and horses tested by use of class-specific recombinant-based enzyme-linked immunosorbent assays for detection of granulocytic ehrlichiosis. | to test serum samples of dogs and horses by use of class-specific recombinant-based elisa for establishing a diagnosis of granulocytic ehrlichiosis attributable to infection with organisms from the ehrlichia phagocytophila genogroup. | 2001 | 11560261 |
| characterization of the major antigenic protein 2 of ehrlichia canis and ehrlichia chaffeensis and its application for serodiagnosis of ehrlichiosis. | canine monocytic ehrlichiosis, caused by ehrlichia canis or ehrlichia chaffeensis, can result in clinical disease in naturally infected animals. coinfections with these agents may be common in certain areas of endemicity. currently, a species-specific method for serological diagnosis of monocytic ehrlichiosis is not available. previously, we developed two indirect enzyme-linked immunosorbent assays (elisas) using the major antigenic protein 2 (map2) of e. chaffeensis and e. canis. in this study, ... | 2003 | 12853379 |
| natural and experimental infection of white-tailed deer (odocoileus virginianus) from the united states with an ehrlichia sp. closely related to ehrlichia ruminantium. | an ehrlichia sp. (panola mountain [pm] ehrlichia sp.) closely related to ehrlichia ruminantium was recently detected in a domestic goat experimentally infested with lone star ticks (lsts, amblyomma americanum) collected from georgia, usa. the infected goat exhibited pyrexia and mild clinical pathologic abnormalities consistent with ehrlichiosis. at least two other ehrlichia species (ehrlichia chaffeensis and ehrlichia ewingii) are maintained in nature by a cycle involving lsts as the primary vec ... | 2008 | 18436670 |
| ectoparasites and associated pathogens of free-roaming and captive animals in zoos of south carolina. | a survey of ectoparasites and their associated pathogens was conducted in two south carolina zoos, from 2004 to 2007. dead, wild birds and mammals, as well as captive animals examined during routine veterinary checks constituted the study populations. ectoparasites were tested for species of anaplasma, bartonella, coxiella burnetii, ehrlichia, rickettsia, and trypanosoma. forty-six species of ectoparasites were collected from 133 free-roaming and captive hosts and their associated nesting and be ... | 2009 | 18973443 |
| ehrlichiosis in virginia: case reports. | ehrlichiosis is a disease that should be considered in any case of chills, fever and malaise, with or without a history of tick bites. | 1990 | 2349832 |
| a cluster of tick-borne infections: association with military training and asymptomatic infections due to rickettsia rickettsii. | during the spring of 1989, 86 members of a military unit from the state of maryland, usa, participated in two-week-long training manoeuvres in the states of arkansas (location fc) and virginia (location faph). acute febrile illnesses due to infections with two tick-borne pathogens, rickettsia rickettsii and ehrlichia sp., were confirmed serologically in 2 initial cases who were admitted to the hospital. a seroepidemiological investigation among unit members found an additional 17 of 109 individu ... | 1992 | 1412666 |
| ehrlichia canis infection in a dog in virginia. | | 1975 | 1150498 |