Detection of Rickettsia tamurae DNA in Ticks and Wild Boar (Sus scrofa leucomystax) Skins in Shimane Prefecture, Japan

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概要

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• We used 24 wild boars trapped from December 2009 to January 2010 and a further 65 from July 2010 to August 2010 in Misato Town, Shimane Prefecture, Japan. We collected blood, spleens, skins, and ticks from the wild boars, which were examined for rickettsial infections using polymerase chain reaction (PCR) primers for the genes rickettsial 17-kDa antigen and citrate synthase (gltA). We amplified Rickettsia tamurae AT-1 DNA from the tick Amblyomma testudinarium and from wild boar skins where ticks attached. Antibodies against spotted fever group Rickettsia were detected in wild boar sera using immunofluorescence, whereas blood and spleen samples contained no rickettsial DNA. This study suggests that wild boars have a role as an amplifier and a transporter of A. testudinarium, which harbor R. tamurae. One case of R. tamurae infection in humans was reported in Shimane Prefecture. Therefore, R. tamurae infections in humans might increase, if wild boar populations and their habitats expand.

著者

• Suzuki Masatsugu

  Faculty Of Engineering Science Osaka University:department Of Physics State University Of New York

• Takano Ai

  Department Of Bacteriology National Institute Of Infectious Diseases

• Inokuma Hisashi

  Department Of Applied Veterinary Medicine Obihiro University Of Agriculture And Veterinary Medicine

• Ando Shuji

  Department Of Information Sciences Faculty Of Science And Technology Tokyo University Of Science

• KAWABATA Hiroki

  United Graduate School of Veterinary Science, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan

• MOTOI Yuta

  United Graduate School of Veterinary Science, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan

• ASANO Makoto

  Faculty of Applied Biological Sciences, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan

• TAKANO Ai

  Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo 162–8640, Japan

• SUZUKI Masatsugu

  Faculty of Applied Biological Sciences, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan

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