Four cases of hepatitis E after eating wild boar meats in Aichi, Japan

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Other Title
  • 愛知県内で捕獲された野生イノシシ摂食後に発症したＥ型肝炎の４例
  • 症例報告 愛知県内で捕獲された野生イノシシ摂食後に発症したE型肝炎の4例
  • ショウレイ ホウコク アイチ ケンナイ デ ホカク サレタ ヤセイ イノシシ セッショク ゴ ニ ハッショウ シタ Eガタ カンエン ノ 4レイ

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Abstract

We experienced 4 cases (2 in 2005 and 2 in 2006) of hepatitis E, where the patients developed their disease one or two months after eating meats and/or entrails of wild boars captured in Aichi prefecture, Japan. All 4 were middle-aged men, and 3 had a history of significant alcohol drinking. One of them developed hepatic coma, received corticosteroid administration and plasma exchange therapy, and survived eventually. Another patient also suffered severe form of hepatitis but not encephalopathy. Hepatitis E virus (HEV) of genotype 4 was detected in all. Interestingly, the nucleotide sequences of HEV from the 4 patients showed quite a high degree of similarity to each other (98.8-99.8%) as well as to those from wild boars in Aichi (99.1-100%), despite showing only a significantly lower similarity to those reported as genotype 4 from other areas in Japan (85.4-89.3%). These findings suggest that an indigenous strain of HEV genotype 4 is now spreading in Aichi, and warrant a need for immediate countermeasures.<br>

Journal

  • Kanzo

    Kanzo 47 (10), 465-473, 2006

    The Japan Society of Hepatology

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