| parasitic arthropods of sympatric meadow voles and white-footed mice at fort detrick, maryland. | twelve species of parasitic arthropods (one sucking louse, two fleas, one tick, and eight mites) were recovered from 51 meadow voles, microtus pennsylvanicus (ord); whereas nine species (one sucking louse, one bot, three fleas, one tick, and three mites) were collected from 48 white-footed mice, peromyscus leucopus (rafinesque), live-trapped on the grounds of fort detrick, frederick county, md., during 1990 and 1991. the most commonly collected arthropods from m. pennsylvanicus were the fur mite ... | 1992 | 1404254 |
| distribution, density, and lyme disease spirochete infection in ixodes dammini (acari: ixodidae) on white-tailed deer in maryland. | a statewide survey of ticks parasitizing white-tailed deer was carried out in maryland during november 1989 to assess the status of the deer tick, ixodes dammini spielman, clifford, piesman & corwin, the major vector of lyme disease in the northeastern united states. ticks were collected from deer carcasses brought in by hunters at 23 check stations (one per county). a total of 3,437 i. dammini were collected from 538 of 1,281 deer (42%), together with 2,013 dermacentor albipictus (packard) and ... | 1992 | 1552529 |
| white-footed mice: tick burdens and role in the epizootiology of potomac horse fever in maryland. | one hundred ten white-footed mice (peromyscus leucopus) were captured on horse farms in south-central maryland, examined for ticks, and tested for specific antibodies to ehrlichia risticii, the causative agent of potomac horse fever. peromyscus leucopus were consistently infested with immature american dog ticks (dermacentor variabilis), with monthly prevalences as high as 80%. sera from all 97 p. leucopus tested for antibodies to e. risticii were negative. this indicates that p. leucopus is not ... | 1989 | 2668569 |
| american dog tick (acari: ixodidae), summer activity on equine premises enzootic for potomac horse fever in south-central maryland. | | 1986 | 3753991 |
| borrelia burgdorferi in eastern virginia: comparison between a coastal and inland locality. | in virginia, borrelia burgdorferi was more prevalent in a site along the atlantic ocean, near maryland, than in an inland site near williamsburg and yorktown. at the coastal site on assateague island, b. burgdorferi was isolated from 4.2% of 475 animals sampled, including four species of small mammals. serologic tests indicated that 25-37% of the small rodents assayed had been exposed to b. burgdorferi. immunofluorescence antibody assays specific for b. burgdorferi showed spirochete infection in ... | 1995 | 7677212 |
| ticks and antibodies to borrelia burgdorferi from mammals at cape hatteras, nc and assateague island, md and va. | results of a survey for ixodid ticks and/or serum antibodies to borrelia burgdorferi from 14 species of small to large mammals from eastern coastal areas of the united states are presented. most samples were obtained from july 1987 through june 1989 (excluding december-march) at 3 locales: assateague is. national seashore, worcester co., md., and accomack co., va. (approximately 38 degrees 05' n 75 degrees 10' w), and cape hatteras national seashore, dare co., nc (approximately 35 degrees 30' n ... | 1999 | 10534951 |
| spotted-fever group rickettsia in dermacentor variabilis, maryland. | three-hundred ninety-two adult dermacentor variabilis were collected from six maryland counties during the spring, summer, and fall of 2002. infection prevalence for spotted fever group rickettsia was 3.8%, as determined by polymerase chain reaction. single strand conformational polymorphism (sscp) analysis followed by sequencing indicated that all infections represented a single rickettsial taxon, rickettsia montanensis. | 2004 | 15496254 |
| distribution of borreliae among ticks collected from eastern states. | lyme disease is the most commonly reported vector-borne disease in the united states and is transmitted by borrelia burgdorferi-infected ixodes species. the disease is typically characterized by an erythema migrans (em) rash at the site of tick feeding. em rashes have also been associated with feeding by amblyomma americanum ticks despite evidence suggesting that they are incompetent vectors for lyme disease. in 1996, a borrelia organism only recently cultivated in the laboratory was described i ... | 2005 | 16417434 |
| infrequency of rickettsia rickettsii in dermacentor variabilis removed from humans, with comments on the role of other human-biting ticks associated with spotted fever group rickettsiae in the united states. | abstract from 1997 to 2009, the tick-borne disease laboratory of the u.s. army public health command (usaphc) (formerly the u.s. army center for health promotion and preventive medicine) screened 5286 dermacentor variabilis ticks removed from department of defense (dod) personnel, their dependents, and dod civilian personnel for spotted fever group rickettsiae using polymerase chain reaction and restriction fragment length polymorphism analysis. rickettsia montanensis (171/5286 = 3.2%) and ricke ... | 2010 | 21142953 |