Babesia divergens-like organisms from free-ranging chamois (Rupicapra r. rupicapra) and roe deer (Capreolus c. capreolus) are distinct from B. divergens of cattle origin - an epidemiological and molecular genetic investigation

Veterinary Parasitology
Nicole SchmidAlexander Mathis

Abstract

In 2005 and 2006, three adult female chamois (Rupicapra r. rupicapra) were found dead with signs of acute babesial infection in the eastern Swiss Alps. PCR on DNA extracted from blood or spleen of the carcasses revealed sequence identity of the amplified part of the 18S rRNA gene with GenBank entries attributed to Babesia divergens of cattle origin or B. capreoli of wild ruminant origin which have never been described before in this region. Examination of 424 blood samples from 314 head of cattle from this area by IFAT, microscopy and PCR provided no evidence for babesial infection. Six of 887 ticks collected from cattle were PCR-positive, and sequencing revealed Babesia sp. genotype EU1 in five and B. divergens/B. capreoli in one of them. A Babesia isolate of chamois, two isolates of roe deer from the same region and one isolate of a roe deer from the north-western Swiss Alps were genetically compared with two Swiss B. divergens isolates of cattle origin by analysing the genomic rDNA locus. Whereas the near full length sequences of the 18S rRNA gene were virtually identical among all six isolates (>99.4% identity), distinct differences between the two isolates from cattle on the one hand and the four isolates from free-ranging...Continue Reading

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Citations

Jun 14, 2014·Veterinary Research·Adam O MichelMarie-Pierre Ryser-Degiorgis
Nov 13, 2012·Ticks and Tick-borne Diseases·Bernard DavoustPhilippe Parola
Feb 6, 2009·Emerging Infectious Diseases·Claire A M BeckerLaurence Malandrin
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Mar 1, 2010·Ticks and Tick-borne Diseases·Jeremy GrayLouis Weiss
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Apr 4, 2019·Parasite : Journal De La Société Française De Parasitologie·Toufic AklLionel Zenner

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