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Exp Appl Acarol. 1996 Jul;20(7):381-5.

Detection of Borrelia burgdorferi sensu lato by PCR in questing Ixodes ricinus larvae from the Dutch North Sea island of Ameland.

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Research Laboratory for Infectious Diseases, National Institute of Public Health and the Environment, Bilthoven, The Netherlands.


In May 1995, 61 Ixodes ricinus larvae were collected from vegetation on the Dutch North Sea island of Ameland. Fifty-seven lysates (94%) were analysed for the presence of Borrelia DNA by the polymerase chain reaction (PCR), which amplified the intergenic spacer region between the 5S and 23S rRNA genes. Three samples (5%) were positive and hybridization of the PCR product to genomic group-specific probes revealed that two larvae were infected with Borrelia afzelii and group VS116, respectively and one larval tick carried a mixed infection of B. afzelii and Borrelia garinii. Previously, we showed that these three genomic groups were present in adult and nymphal ticks collected on Ameland. Transovarial transmission may be an important factor in the establishment of these genomic groups in the local tick population.

[Indexed for MEDLINE]

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