【摘要】 吉林市为肺吸虫病流行区,江南乡居民皮内试验阳性率为8.0％(50/627)。第一中间宿主为黑龙江短沟蜷,第二中间宿主为东北蝲蛄。前者未查见肺吸虫幼虫,后者囊蚴感染率84.0％,感染度为4.72个/只。当地猫、狗的肺吸虫感染较为普遍,感染度也较重。猫、狗等动物是当地肺吸虫病的主要疫源。人群仅皮试阳性,无病史或体征,粪便中未查见虫卵,属隐性感染。据成虫、虫卵、囊蚴标本的观察和测量,属卫氏并殖吸虫。更多还原

【Abstract】 From an epidemiological survey it is concluded that paragonimiasis is endemic in Tilin city. Intradermal test with adult worm antigen is positive in 8.0% (50/627) of the inhabitants in Jiangnan village. The snail Semisulcospira amurensis is thought to be the first intermediate host, though larval stages of Paragonimus has not been detected in the snail. The crayfish Cambaroides danricus is the second intermediate host,84.0% of which is infected,with an average of 4.7 metacercariae in a crayfish. Infection in dogs and cats with adult worms is common and serious and is the important source of infection in this area. Due to the fact that intradermal test is positive in human population, no history and signs of paragonimiasis are recognized and no eggs are detected in human stool, it is considered that human infection is latent. The causative agent is Paragonimus westermani according to the observations of adult worms, eggs and metacercariae.更多还原