| spatial and temporal dispersion of immature ixodes dammini on peromyscus leucopus in northwestern illinois. | infestation by immature ixodes dammini and infection by borrelia burgdorferi of the white-footed mouse peromyscus leucopus were studied in castle rock state park in northwestern illinois during june-october 1990. prevalence and intensity of infestation of larvae on mice were highest in august with a smaller peak in early june. the distribution of larvae on mice was highly aggregated during each of the sampling periods. aggregation appears to be the result of a series of nonrandom successful atta ... | 1991 | 1779300 |
| survey for ixodes spp. and borrelia burgdorferi in southeastern wisconsin and northeastern illinois. | forested areas adjacent to milwaukee, wis., and chicago, ill., were investigated for rodents and ticks infected with borrelia burgdorferi, the causative agent of lyme disease. white-footed mice (peromyscus leucopus or peromyscus maniculatus), meadow voles (microtus pennsylvanicus), and eastern chipmunks (tamias striatus) were captured; and specimens from these animals were cultured for b. burgdorferi to define whether the midwestern lyme disease area currently encompasses these large metropolita ... | 1991 | 2007650 |
| role of the eastern chipmunk (tamias striatus) in the epizootiology of lyme borreliosis in northwestern illinois, usa. | the role of the eastern chipmunk (tamias striatus) in the epizootiology of lyme borreliosis was evaluated in castle rock state park, illinois (usa), an enzootic region, from june to august 1993. prevalence, intensity, and molting rate of immature ixodes scapularis were determined for chipmunks, white footed mice (peromyscus leucopus), and raccoons (procyon lotor). chipmunks were the primary host for i. scapularis nymphs and an important secondary host for i. scapularis larvae. based upon ear pun ... | 1997 | 9027689 |
| molecular characterization of borrelia spp. isolates from greater metropolitan chicago reveals the presence of borrelia bissettii. preliminary report. | lyme disease in the us is concentrated in three endemic areas: the northeast, the upper mid-west, and the pacific coast. in the mid-west, the range of lyme disease has expanded to include large parts of wisconsin and minnesota. despite its proximity to the mid-western focus, illinois, so far, has not been considered an endemic area. however, more recent data suggest that this situation may be changing. also, the extent of borrelial diversity in the mid-west remains largely unexplored. here, we p ... | 2000 | 11075925 |
| status of ixodes dammini (acari: ixodidae) in illinois. | ixodes dammini spielman, clifford, piesman & corwin was found for the first time in illinois in november 1987, when two adult females were collected from two deer in jo daviess county in the northwestern corner of the state. in 1988, in a study of six state parks in northern illinois, questing adults and nymphs were encountered in one park in ogle county. during the firearm deer hunt in november 1988, adult female and male ticks were found in several counties, with a high rate of infestation (gr ... | 1990 | 2388231 |
| isolation and characterization of borrelia burgdorferi from illinois ixodes dammini. | ixodes dammini ticks from two northwestern illinois sites were found to be infected with borrelia burgdorferi at rates of 19 and 32%. b. burgdorferi isolates, one from each site, had protein and antigenic patterns similar to those of the b-31 strain. an indirect immunofluorescence method proved to be more sensitive than dark-field microscopy in detection of these spirochetes. a modified bsk medium containing rifampin was found to be more efficient for spirochete isolation than unsupplemented bsk ... | 1991 | 1761698 |
| spatial analysis of the distribution of ixodes dammini (acari: ixodidae) on white-tailed deer in ogle county, illinois. | the pattern of infestations of ixodes dammini on white-tailed deer in ogle county in illinois was studied through examinations of hunted deer from 1988 to 1990. the illinois geographic information system mapped the spatial distribution of tick infestations on deer and related it to a known endemic focus for i. dammini and borrelia burgdorferi (castle rock state park), and to a major waterway (rock river). second-order neighborhood analysis was used to analyze the spatial distribution of deer aro ... | 1992 | 1495039 |
| cdc should admit possibility of lyme. | | 1992 | 1491660 |
| ixodes scapularis and borrelia burgdorferi among diverse habitats within a natural area in east-central illinois. | abstract the distributions of the tick vector, ixodes scapularis, and of the etiologic agent of lyme disease, borrelia burgdorferi (bb), have continued expanding in illinois over the past 20 years, but the extent of their spread is not well known. the role of multiple habitats in the establishment and maintenance of i. scapularis and bb at local scales is not well understood, and the use of integrated approaches to evaluate local scale dynamics is rare. we evaluated habitat diversity and tempora ... | 2011 | 21688974 |
| canine surveillance system for lyme borreliosis in wisconsin and northern illinois: geographic distribution and risk factor analysis. | a seroprevalence survey for borrelia burgdorferi was conducted among the healthy canine pet population in selected counties of wisconsin and northern illinois to determine the distribution of lyme disease and associated risk factors. information obtained for each dog included place of residence, lyme disease vaccination status, history of travel and tick exposure, signalment, and medical history. serum samples were screened by enzyme-linked immunosorbent assay and confirmed by an immunoblot proc ... | 2001 | 11716112 |
| genotypic and phenotypic characterization of borrelia burgdorferi isolated from ticks and small animals in illinois. | we have characterized 33 isolates of borrelia burgdorferi from northern illinois (32 isolates) and wisconsin (1 isolate) representing the largest series of midwestern isolates investigated to date. the techniques used for molecular analysis of strains included (i) genospecies typing with species-specific pcr primers, (ii) plasmid profiling by pulsed-field gel electrophoresis of total genomic dna, (iii) large-restriction-fragment pattern (lrfp) analysis by pulsed-field gel electrophoresis of mlui ... | 1995 | 7494019 |