广西人体华支睾吸虫感染现状调查分析

目的了解广西人群华支睾吸虫病流行现状和态势。方法按流行程度和水系流域进行分层整群随机抽样。用改良加藤厚涂片法粪检虫卵并计数。结果调查了9个县(市)27个点13990人,华支睾吸虫平均感染率为9.76%,平均EPG为1083,有6个县(市)查出感染者,其中3个县感染率超过20%。男性平均感染率和EPG分别为13.09%和1320;女性分别为5.89%和658,差异均有显著性。各年龄组人群均有感染,以成人感染为重。蒙古族居民感染率最高,为16.67%;汉族感染率为11.56%,高于壮族的8.17%;壮族感染者EPG最高,为1470。职业分布以医生、教师、农民和行政干部感染为重。结论1989年以来广西华支睾吸虫感染率显著上升,疫情快速蔓延,已经成为一个严重的公共卫生问题,应积极开展综合性防治工作。

A SURVEY ON THE INFECTION OF CLONORCHIS SINENSIS IN GUANGXI, CHINA

Objective To investigate the recent situation of Clonorchis sinensis infection in Guangxi Zhuang Autonomous Region. Methods The investigating sites were selected by stratified sampling considering the geographic factor of river systems and historic data. Modified Kato-Katz's thick smear was used for detection of the parasite eggs in the feces; the data of infection rate and intensity were analyzed. Results A total of 13 990 persons from 27 villages in 9 Counties (Cities) were checked. The average prevalence of C. sinensis infection in the residents was 9.76% and the mean EPG (eggs per gram of faces) was 1 083. The infected cases were found in 6 Counties (Cities), and 3 Counties were found to be heavy endemic area of clonorchiasis, in which the prevalence were over 20%.The prevalence in the male was 13.09%, 2.22 times of that in the female (5.89%); the mean EPG in the male was 1 320, 2.01 times of that in the female (658).The infection was found in every age group, but the adults were contracted more seriously. The prevalence in Hanzu was 11.56%, higher than that of Zhuangzu (8.17%). But the mean EPG in Zhuangzu was 1 470, greater than that of Hanzu (902). The infections in doctors, teachers, peasants and carders were more serious than that in other occupations. Conclusion Since the first national parasites survey in 1987-1989, the prevalence of C. sinensis infection in Guangxi has risen 6.02 times. The quick rising and spreading of the parasite infection has become a serious public health problem in the local areas. An integrated control measurement should be carried out.