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Sühbaatar, Mongolia
Sühbaatar, Mongolia
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Scholz H.C.,University of Federal Defense Munich | Margos G.,German National Reference Center for Borrelia | Derschum H.,University of Federal Defense Munich | Speck S.,University of Federal Defense Munich | And 16 more authors.
Ticks and Tick-borne Diseases | Year: 2013

In Mongolia, Lyme borreliosis was first reported in 2003. To determine which Borrelia species may contribute to the occurrence of Lyme borreliosis in Mongolia, real-time PCR was conducted on 372 adult Ixodes persulcatus ticks collected in Selenge Aimag, the province with the highest incidence of human Lyme borreliosis. 24.5% of ticks were identified to be positive for Borrelia burgdorferi sensu lato DNA. Species differentiation using an SNP-based real-time PCR and multi-locus sequence analysis revealed that strains phylogenetically closely related to B. bavariensis (previously known as B. garinii OspA serotype 4) is the most prevalent species, showing an unexpectedly high genetic diversity. © 2012 Elsevier GmbH.


Speck S.,University of Federal Defense Munich | Derschum H.,University of Federal Defense Munich | Damdindorj T.,National Center for Infectious Diseases with Natural Foci | Dashdavaa O.,National Center for Infectious Diseases with Natural Foci | And 16 more authors.
Ticks and Tick-borne Diseases | Year: 2012

Since the year 2005, clinical patterns resembling tick-borne rickettsioses have been noticed in Mongolia. Epidemiological data regarding species of the aetiological agent, tick vector, prevalence, and distribution as well as incidence of human cases throughout Mongolia are still sparse to date. In order to identify Rickettsia species occurring in Mongolia, we investigated Dermacentor nuttalli (n=179) and Ixodes persulcatus (n=374) collected in 4 selected provinces. Rickettsia raoultii was the predominant Rickettsia (82% prevalence) found in D. nuttalli and was also detected in I. persulcatus (0.8%). The Rickettsia prevalence in D. nuttalli from different provinces varied between 70% and 97%. In addition, R. sibirica was identified in approximately 4% of D. nuttalli, but solely from Arkhanghai province. The results of this study extend the common knowledge about the geographic distribution of R. raoultii and its high prevalence in D. nuttalli. Although the pathogenicity of this Rickettsia is still unclear, it should be considered in Mongolian patients suspected of having tick-borne rickettsiosis. © 2012 Elsevier GmbH.

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