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目的通过对福建省三明市三元区并殖吸虫虫种和各阶段宿主及其感染率、感染度研究,调查三元区并殖吸虫疫源地。方法捕捉螺-、溪蟹和野猫粪标本,按常规方法进行并殖吸虫囊蚴、尾蚴和虫卵的检查、留置观察和感染动物试验。根据病人线索进行人群感染率的调查,并了解当地地理、环境、气候。结果检查放逸短沟蜷654只、洱海螺新种846只、拟钉螺(待定种)135只和235只沼螺,只在1只洱海螺中检出并殖吸虫尾蚴,检出阳性率为0.12%。充当第二中间宿主的福建华溪蟹和华南三角肢溪蟹新种携带有卫氏并殖吸虫二、三倍体型,斯氏狸殖、泡囊狸殖、三平正并殖吸虫囊蚴,蟹的感染率为44.28%,平均每只蟹和每克蟹组织携带囊蚴分别为24.90和2.47;人群皮试阳性率为8.64%(21/243),皮试阳性者作血清抗体检测,阳性率为23.81%(5/21);3份野猫粪标本有2份检出并殖吸虫虫卵和孟氏裂头绦虫虫卵、缩小膜壳绦虫虫卵及一种棘口吸虫虫卵。结论三元区为以斯氏狸殖吸虫为主的肺吸虫病高度疫源地,同时也是孟氏裂头绦虫、缩小膜壳绦虫及一种棘口吸虫的自然疫源地。
Objective To investigate the prevalence of Paragonimus spp. In Sanyuan District of Sanming City, Fujian Province, and to investigate the prevalence of Paragonimus spp. Methods The snails, crabs and wild cats were collected and tested for paragonimus, cercariae and egg according to the routine methods. According to the patient clues to investigate the rate of population infection, and understand the local geography, environment, climate. Results A total of 654 spontaneous ciliates were isolated from 654 snails, 846 new species of Erhai snails, 135 snails of Anthozoa (undetermined species) 0.12%. New breeds of Hypoxia crab in Fujian and crested crabs in southern China, which serve as the second intermediate host, harbor the second and third diploids of Paragonimus westermani, the genus Castanopsis, the buccal genitalia, the metacercariae of the third genus Paragonimus, Of the infection rate was 44.28%, with an average of 24.90 and 2.47 for each crab and each crab tissue; the positive rate of skin test in the population was 8.64% (21/243), and the positive skin test was used as the serum antibody test. The positive rate And 23.81% (5/21) respectively. Three wild cat feces samples showed two eggs of Paragonimus and two eggs of M. monocytogenes, which reduced the eggs and one kind of echinococcosis eggs. Conclusion The Sanyuan District is a high foci of paragonimiasis, and is also a natural foci for the reduction of tapeworms, narrowing of tapeworms and a kind of trichinella.