Exotic Rickettsiae in Ixodes ricinus: fact or artifact?

E. Tijsse-Klasen, M. Fonville, L.S. van Overbeek, J.H.J. Reimerink, H. Sprong

    Research output: Contribution to journalArticleAcademicpeer-review

    9 Citations (Scopus)

    Abstract

    Several pathogenic Rickettsia species can be transmitted via Ixodes ricinus ticks to humans and animals. Surveys of I. ricinus for the presence of Rickettsiae using part of its 16S rRNA gene yield a plethora of new and different Rickettsia sequences. Interpreting these data is sometimes difficult and presenting these findings as new or potentially pathogenic Rickettsiae should be done with caution: a recent report suggested presence of a known human pathogen, R. australis, in questing I. ricinus ticks in Europe. A refined analysis of these results revealed that R. helvetica was most likely to be misinterpreted as R. australis. Evidence in the literature is accumulating that rickettsial DNA sequences found in tick lysates can also be derived from other sources than viable, pathogenic Rickettsiae. For example, from endosymbionts, environmental contamination or even horizontal gene transfer.
    Original languageEnglish
    Article number54
    Number of pages3
    JournalParasites & Vectors
    Volume3
    DOIs
    Publication statusPublished - 2010

    Keywords

    • ticks

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