| 张传生,袁健华.吉林省桦甸市卫氏并殖吸虫的类型及流行病学调查[J].Chinese journal of Epidemiology,1991,12(6):339-342 |
| 吉林省桦甸市卫氏并殖吸虫的类型及流行病学调查 |
| A Investigation on the Types of Chromosomes and Epidemiology of Paragonimus Westermanni in Huadian City of Jilin Province |
| Received:February 14, 1989 Revised:December 01, 1989 |
| DOI： |
| KeyWord: 卫氏并殖吸虫 |
| English Key Word: Paragonimus Westermanni |
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| Abstract: |
| 本文对卫氏并殖吸虫在桦甸地区居民、哺乳动物和蝲蛄的感染进行调查。对囊蚴和虫卵大小及染色体类型进行观察,结合临床症状进行分析。结果:第一中间宿主:五个点的蝲蛄感染率均为100%,感染度除二道甸子稍低外,其余四个点感染度达99~160个/蝲蛄;居民及中小学生的皮试阳性率为25.1%,ELISA阳性率为54%,对重点疑似病人进行痰检阳性率为2.2%,大部分皮试阳性及ELISA阳性者无明显症状和体征;囊蚴和虫卵形态及染色体:囊蚴大小平均为315~356μm,虫卵为60.6~70.1×48.2~47.4μm,成虫标本受精囊明显可见,有丝和减数分裂象染色体数分别为22条和11条(2n=22,n=11),表明五个点的卫氏并殖吸虫为二倍体型。由人群痰检阳性率为0.4%,且大部分感染者无明显症状和体征或仅为非典型症状。提示绝大多数人的感染为“一过性”或为幼虫寄生。 |
| English Abstract: |
| An investigation on the types of chromosomes and epidemiology of Paragomanni westermanni in five Villiges 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. |
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