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(literally ''oil symptoms'') was a mass poisoning by polychlorinated biphenyls (PCBs) which occurred in northern Kyūshū, Japan in 1968.〔'' )〕 Common symptoms included dermal and ocular lesions, irregular menstrual cycles and a lowered immune response.〔〔〔(PCB Baby Studies Part 2 )〕 Other symptoms included fatigue, headache, cough, and unusual skin sores.〔(Environmental Diseases from A to Z )〕 Additionally, in children, there were reports of poor cognitive development.〔〔〔 Although a decade had passed, an almost identical case occurred in Taiwan in 1979. Again, rice oil had been heated by filaments that leaked. On this occasion, the condition there was known as Yu-cheng disease (). Similar symptoms and effects of the PCBs and PCDFs were shown, especially in children.〔 There have been studies undertaken on animals to understand the mechanisms of PCBs and PCDFs and their effects.〔 Scientists discovered that low levels of PCBs could kill fish and other wildlife and as such their use in manufacturing was reduced.〔 In 2008, a dioxin poisoning event caused the 2008 Irish pork crisis in which Irish pork was recalled worldwide. ==References== *http://www.atsdr.cdc.gov/DT/pcb007.html *http://student.bmj.com/issues/05/02/education/58.php *http://www.annalsnyas.org/cgi/content/abstract/514/1/222 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yushō disease」の詳細全文を読む スポンサード リンク
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