Zhang C
Huadian Sanitary and Anti-Epidemic Station, Jilin.
Zhonghua Liu Xing Bing Xue Za Zhi. 1991 Dec;12(6):339-42.
An investigation on the types of chromosomes and epidemiology of Paragomanni westermanni in five Villages and towns of Huadian city was carried out. The data showed that the infection rate of crayfish, the first intermediate host, was 100% and the infectiosities varied from 99 to 160/per crayfish in the five areas. The genetic patterns of all the cysticercus, ovum and imagoes had been proved to be diploid by morphological and genetic studies. The infection rate of animal final host such as dogs and cats reached as highly as 94.3%, and all the infected animals presented typical pathological changes. Among the total 1008 examined people, the positive rate of skin test of hypersensitivity was 25.1%, and only 0.4% was positive sputum test. Moreover, very few infected people had remarkable clinical expressions, suggesting that the infection of most people was only "transient", or of the larval parasitisim. The results showed that diploid Paragonimus westermanni were not strongly pathogenic to human beings.
对华甸市五个乡镇卫氏并殖吸虫的染色体类型及流行病学进行了调查。数据显示，第一中间宿主小龙虾的感染率为100%，五个地区每只小龙虾的感染度在99至160之间不等。通过形态学和遗传学研究证明，所有囊蚴、虫卵和成虫的遗传模式均为二倍体。犬、猫等动物终宿主的感染率高达94.3%，所有感染动物均呈现典型病理变化。在总共1008名受检者中，超敏皮肤试验阳性率为25.1%，痰检阳性率仅为0.4%。此外，极少有感染者有明显临床症状，这表明大多数人的感染只是“一过性”的，或为幼虫寄生。结果表明，二倍体卫氏并殖吸虫对人类的致病性不强。
