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据1987年4月15日召开的北海道棘球属病防治会议公布,在北海道内212个市镇村中,污染地区已由71个增加到103个,患者数也累积达258例。棘球属(包绦虫)成虫寄生在肉食动物小肠内,以幼虫方式寄生在包括人在内的各种哺乳类的内脏(中间宿主)叫作包虫。因为最初被命名为包虫,且又将成虫、包虫都混为棘球属,所以国际上有将包虫称之为棘球囊(hydatid)者。包绦虫可分为4种,在日本分布有多包(绦)虫和单包(绦)
According to the Hokkaido hydatid disease prevention and control meeting held on April 15, 1987, the number of contaminated areas has increased from 71 to 103 in 212 municipalities in Hokkaido, and the number of patients has also reached 258. Entamoeba (tapeworm) adult parasites in the small intestine of carnivores, larvae parasites in various mammals, including human internal organs (intermediate host) is called hydatid. Because it was originally named hydatid, and in turn the adult and hydatid are all mixed into echinacea, so called hydatid. Bait tapeworm can be divided into 4 kinds, distributed in Japan, how many packages (squirrels) and single package (sash)