| infection of ixodes ricinus (acari:ixodidae) by borrelia burgdorferi in ile de france. | free-living nymphs and adults from rambouillet and fontainebleau, 2 major forests of ile de france, were collected to determine the infection rates of ixodes ricinus l. by borrelia burgdorferi (johnson, schmid, hyde, steigerwalt & brenner). field-collected i. ricinus nymphs and adults were screened for the presence of b. burgdorferi using direct fluorescent antibody assay. the infection rates of nymph, male and female were 12.4% (314), 2.8% (35), and 2.9% (34). no difference in infection rates o ... | 1996 | 8699470 |
| density of deer in relation to the prevalence of borrelia burgdorferi s.l. in ixodes ricinus nymphs in rambouillet forest, france. | the rambouillet forest, a lyme disease-endemic area near paris, france, was surveyed from september 1994 to october 1995 to determine the risk periods and zones for humans. firstly, during the period of ixodes ricinus activity, abundance of nymphs is greater in spring than in autumn. secondly, we observed significant variation in nymphal abundance between zones according to the density of cervids. the polymerase chain reaction (pcr) was used to detect dna of borrelia burgdorferi sensu lato in 46 ... | 1999 | 10356769 |