ixodes ricinus density and infection prevalence of borrelia burgdorferi sensu lato along a north-facing altitudinal gradient in the rhône valley (switzerland).questing ixodes ricinus ticks were sampled monthly along a north-facing altitudinal gradient in the canton of valais, switzerland, from march 2004 to february 2005. tick density and infection with borrelia burgdorferi sensu lato were monitored. ticks were collected by flagging vegetation at three different altitudes (750 m, 880 m, and 1020 m above sea level). ticks were examined for borrelia by polymerase chain reaction (pcr) followed by reverse line blot. at the three altitudes, questing tick a ...200717417957
occurrence of different genospecies of borrelia burgdorferi sensu lato in ixodid ticks of valais, switzerland.a total of 825 adult ticks (727 ixodes ricinus, 72 dermacentor marginatus and 26 haemaphysalis punctata) was collected from vegetation in valais (switzerland) in 1987 to 1992. they were examined for the presence of borrelia burgdorferi sensu lato, the etiologic agent of lyme borreliosis. b. burgdorferi sensu lato was detected by indirect immunofluorescence assay, dark field microscopy and/or culture in 221 out of 727 i. ricinus (30.4%) and none in the other two species. from these 221 infected t ...19958549716
genotypic and phenotypic diversity among nine swiss isolates of borrelia burgdorferi.nine strains of borrelia burgdorferi isolated from ticks in the canton of valais (switzerland) were characterized genotypically by determining restriction fragment length polymorphisms (rflp) and plasmid profiles. the strains were also compared with respect to presence and electrophoretic mobility of the outer surface proteins ospa and ospb, and immunoreactivity of ospa and a 12 kd antigen. by both approaches, three different patterns were observed resulting in identical grouping of the strains. ...19938106023
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