| borrelia burgdorferi in ticks (acari: ixodidae) from coastal virginia. | ixodid ticks removed from hosts and from vegetation during march-november 1987 at sites in coastal virginia and north carolina were examined for borrelia burgdorferi. b. burgdorferi was evident in nine (22%) ixodes cookei packard removed from rice rats (oryzomys palustris), a white-footed mouse (peromyscus leucopus), and raccoons (procyon lotor); four (6%) amblyomma americanum (l.) removed from raccoons; and two (3%) dermacentor variabilis (say) removed from a raccoon and a rice rat. b. burgdorf ... | 1991 | 1941936 |
| parasitization of humans in west virginia by ixodes cookei (acari: ixodidae), a potential vector of lyme borreliosis. | in 32 collections, two larvae, 33 nymphs, and one adult female ixodes cookei packard were collected from humans in west virginia from august 1987 to may 1990. most were attached. the ticks were found in 14 counties and were the most abundant ixodes found biting humans. one nymphal i. cookei was removed from the left axilla of a 39-yr-old woman who lives and works in monongalia and marion counties, w. va. the bite was the center of an expanding erythematous lesion reaching 4 cm in diameter, clear ... | 1991 | 2033612 |
| epidemiology of lyme disease in virginia. | prior to january 1986, only one case of lyme disease was reported from virginia. in 1986-87, however, the virginia department of health observed an increase in reports of suspected lyme disease by physicians, despite the fact that ixodes dammini is not highly prevalent in the virginia tick population. twenty-eight cases of lyme disease were identified in virginia, of which eight cases occurred in 1986 and 20 in 1987. lyme disease appears to be increasing in frequency in virginia and moving south ... | 1990 | 2240015 |
| 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 |
| immature ixodes scapularis (acari: ixodidae) parasitizing lizards from the southeastern u.s.a. | preserved museum specimens of 13 lizard and 3 snake species common in the southeastern u.s.a. were examined for immature ixodes scapularis say ticks. five eumeces and 4 ophisaurus lizard species yielded an infestation prevalence of 17.8% for species of eumeces and 29.0% for species of ophisaurus. mean intensity of larvae and nymphs was 7.1 and 2.7, respectively, for species of eumeces, and 6.3 and 1.4, respectively, for species of ophisaurus. collection dates of the lizards ranged from january t ... | 1993 | 8410539 |
| reported distribution of ixodes scapularis and ixodes pacificus (acari: ixodidae) in the united states. | lyme disease, caused by infection with borrelia burgdorferi, is the most frequently reported arthropod-borne disease in the united states. to develop a national map of the distribution of the vectors of b. burgdorferi to humans (ixodes scapularis say and ixodes pacificus cooley & kohls ticks), we sent questionnaires to acarologists, health officials, and lyme disease researchers; surveyed the 1966-1996 medline data base; and reviewed 1907-1995 national tick collection data. tick collection metho ... | 1998 | 9775584 |
| 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 |
| establishment and characterization of an oklahoma isolate of anaplasma marginale in cultured ixodes scapularis cells. | anaplasma marginale is a tick-borne hemoparasite of cattle worldwide. the virginia isolate of a. marginale was propagated previously in a cell line derived from embryos of the tick, ixodes scapularis. the cultured anaplasma (va-tc) was passaged continuously for over 4 years and retained its infectivity for cattle and antigenic stability. we report herein the continuous in vitro cultivation of a second isolate of a. marginale derived from a naturally infected cow in oklahoma (ok-tc). blood from t ... | 2000 | 10669100 |
| comparison of the reservoir competence of medium-sized mammals and peromyscus leucopus for anaplasma phagocytophilum in connecticut. | in the northeastern united states, anaplasma phagocytophilum, the agent of human granulocytic ehrlichiosis (hge), is transmitted by the tick vector ixodes scapularis. the white-footed mouse peromyscus leucopus is a competent reservoir for this agent, but the reservoir competence of non-peromyscus hosts of i. scapularis has not been studied. here, we report data confirming reservoir competence of medium-sized mammals for a. phagocytophilum. raccoons, virginia opossums, gray squirrels, and striped ... | 2002 | 12737542 |