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  • Title: Genetic diversity of Pasteurella species isolated from European vespertilionid bats.
    Author: Mühldorfer K, Schwarz S, Fickel J, Wibbelt G, Speck S.
    Journal: Vet Microbiol; 2011 Apr 21; 149(1-2):163-71. PubMed ID: 21050683.
    Abstract:
    Pasteurella are an important cause of fatal infections in free-ranging bats, but the genetic diversity of bat-derived strains is unclear. In the current study, 81 Pasteurella strains associated with pneumonia, severe organ necroses and systemic infection in free-ranging European vespertilionid bats were characterized by biochemical and molecular typing methods. Genetic relationships and subspecies status of Pasteurella multocida strains were determined by comparative 16S rDNA and rpoB gene sequence analysis. In addition, 30 representatives of the bat-derived P. multocida strains were selected based on phenotypic and genotypic tests to be compared by pulsed-field gel electrophoresis using SmaI. Most (85%) of the Pasteurella strains obtained from free-ranging bats in this study represented P. multocida ssp. septica. P. multocida ssp. multocida and Pasteurella species B were also identified in a small number of isolates. PFGE analysis correlated well with the sequencing results and revealed a high genetic diversity among bat-derived strains of P. multocida ssp. septica. Strains sharing identical or closely related SmaI fragment patterns were cultured from bats of different species, geographic origins, and years of isolation. The presence of numerous different P. multocida strains allows the assumption that Pasteurella infections in vespertilionid bats are not solely based on intra- but also on inter-species transmission. And indeed, our results present evidence of P. multocida infections in bats following cat predation.
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