中文摘要：

目的掌握血吸虫病潜在流行区血吸虫病潜在流行因素的动态变化,为建立血吸虫病监测预警系统以应对突发疫情提供科学依据。方法于2008年在湖北、江苏、安徽、山东、重庆等5省（市）10个县（市、区）选择血吸虫病潜在流行区设立固定监测点和流动监测点,采用血清学、病原学方法调查当地人群、流动人口及家畜的血吸虫感染情况;在危险地带及可疑环境开展钉螺孳生分布调查,并在通江河道开展钉螺扩散调查。结果对9县（市、区）6～65岁当地居民5225人进行血清学检测,阳性58例,阳性率为1.11%;其中IHA方法检测4224人,阳性35例,阳性率为0.83%,ELISA检测1001人,阳性23例,阳性率为2.30%。对56例血清学检查阳性者的粪样进行Kato-Katz法检测,结果均为阴性。对渔船民及其他流动人口2204人进行血清学检测,阳性51例,阳性率为2.31%;其中IHA检测1603人,阳性26例,阳性率为1.62%,ELISA检测601人,阳性25例,阳性率为4.16%。对29例血检阳性者进行粪检,8例检测到血吸虫虫卵。潜在流行区开展钉螺调查面积48.31 hm2,未查获钉螺;钉螺扩散及可疑环境调查亦未发现有钉螺从流行区扩散至潜在...

英文摘要：

Objective To explore the potential risk factors of schistosomiasis transmission in potential endemic areas so as to provide scientific basis for setting up the prediction and surveillance systems to prepare the response for emergence of schistosomiasis. Methods In 2008, fixed and mobile surveillance sites in potential endemic areas of 10 counties in Hubei, Jiangsu, Anhui, Shandong provinces and Chongqing Municipality were selected. Immunological assays and/or stool examinations were carried out to investigate the infection situation of local people, mobile population and livestock. The distribution of Oncomelania snails was investigated in risk areas and suspicious areas, and spreading patterns of snails were observed in the rivers that directly connected with the Yangtze River. The imported snails were raised in cages located in the marshland of Chao Lake, Weishan Lake and the Yangtze River along Zhangjiagang City. Results A total of 5 525 of 6-65 years old local people were screened by immunological tests, and the positive rate of antibody was 1.11% （58/5 225 ）. Among the whole , 4 224 individuals were examined by IHA and the positive rate was 0.83% （35/4 224）, while 1 001 persons were tested by ELISA and the positive rate was 1.10% （43/ 3913 ）. A total of 56 antibody positives were examined by Kato-Katz technique and there were no positives. A total of 2 204 mobile population including fishermen and boatmen were tested by serological tests and the positive rate was 2.31% （51/2 204）. Among the mobile population, 1 603 individuals were tested by IHA while 601 persons tested by ELISA, and the antibody positive rates were 1.62% （26/1603） and 4.16% （25/601）, respectively. Eight patients were found among the 29 antibody positives throughthe stool examination by Kato-Katz technique. Potential endemic areas with 48.31 hm2 were investigated for Oncomelania snail detection. The investigation on snail spreading patterns and surveillance on suspicious circumstances were carried out, with no Oncomel