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1 July 2017 DISTRIBUTION AND SEASONAL VARIATION OF LJUNGAN VIRUS IN BANK VOLES (MYODES GLAREOLUS) IN FENNOSCANDIA
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Abstract

Ljungan virus (LV) is a picornavirus originally isolated from Swedish bank voles (Myodes glareolus) in 1998. The association of LV with human disease has been debated ever since, but fundamental data on the ecology of the virus are still lacking. Here we present results of the first intensive study on the prevalence of LV in bank voles trapped in Fennoscandia (Sweden and Finland) from 2009–12 as determined by PCR. Using an LV-specific real-time reverse transcriptase PCR, LV was detected in the liver of 73 out of 452 (16.2%) individuals and in 13 out of 17 sampling sites across Sweden and Finland (mean per site prevalence 16%, SE 3%, range 0–50%). We found more infected animals in autumn compared to spring, and lighter and heavier individuals had a higher prevalence than those with intermediate body masses. The result that LV prevalence is also lower in heavier (i.e., older) animals suggests for the first time that LV infection is not persistent in rodents.

© Wildlife Disease Association 2017
Cristina Fevola, Chiara Rossi, Roberto Rosà, Åke Nordström, Frauke Ecke, Magnus Magnusson, Andrea L. Miller, Jukka Niemimaa, Gert E. Olsson, Anne J. Jääskeläinen, Birger Hörnfeldt, Heikki Henttonen, and Heidi C. Hauffe "DISTRIBUTION AND SEASONAL VARIATION OF LJUNGAN VIRUS IN BANK VOLES (MYODES GLAREOLUS) IN FENNOSCANDIA," Journal of Wildlife Diseases 53(3), 552-560, (1 July 2017). https://doi.org/10.7589/2016-06-145
Received: 27 June 2016; Accepted: 1 November 2016; Published: 1 July 2017
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