流行病学有人说旋毛虫原以北半球为起源的寄生虫病。即北极、亚北极的熊、狐狸、海豹等动物中普遍感染,随着社会文明的发展,在食至家畜肉的野兽和猪之间,进而从猪又感染到人。旋毛虫病的流行环节 Le—vine(1968)把它分为3个型:①野生(feral);②家畜(domestic),③半家畜(Semidomestic).野生动物的周期多数与野生哺乳动物有关。 Epidemiology Some people say that Trichinella originates in the northern hemisphere parasitic disease. That Arctic, Arctic bears, foxes, seals and other animals in general infection, with the development of social civilization, food and livestock between the beast and pigs, and then infected with pigs from people. Le-vine (1968), a popular part of trichinellosis, divides it into three types: feral, domestic, and semidomestic. The majority of wildlife cycles are related to wild mammals.