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医原性CJDにはヒト硬膜やヒト脳下垂体から抽出した成長ホルモンなど臓器や生物製剤,あるいは脳外科手術などの医療行為からの感染がある。この中で日本で多数の患者が発症した硬膜移植後のCJDの特徴を詳しく述べる。あわせてウシ海綿状脳症から感染した英国の新変異型CJDを紹介し,動物からヒト,ヒトからヒトへのプリオン蛋白の感染についての現在の問題点に言及する。
In 1997, a surveillance group for Creutzfeldt-Jakob disease (CJD) in Japan identified 829 patients with CJD during January 1979-May 1996, including a large number (43 patients) who had received a cadaveric dura mater graft during a neurosurgical (42) or orthopedic (one) procedure during 1979-1991. At least 41 persons had received a single brand of dura mater graft, LYODURA, processed by B. Braun Melsungen AG, Germany. The graft had been processed before May 1987, when the company revised its procedures for collection and processing dura.
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