广州市血吸虫病阻断传播后监测效果分析

目的 了解广州市（辖区内花都、增城）阻断传播血吸虫病后的疫情监测动态.方法 建立阻断血吸虫病后的监测系统,包括对钉螺、传染源、低年龄组人群及外来人员同时进行监测.结果 1991～2000年共查螺3 052亩,只查到杂螺,均未发现活钉螺.皮试低年龄组人群和外来人员4 412人,阳性154人,平均阳性率为3.49%,阳性者均采用粪检尼龙袋集卵孵化法复查均未发现血吸虫卵阳性病人.解剖野鼠1 278只作直肠压片检查,均未发现血吸虫卵阳性鼠.结论 广州市血吸虫病阻断传播后防治成果是巩固的,但随着近几年湖区几省血吸虫病呈上升趋势,且局部出现暴发流行,因此必须加强监测力度严防外来传染原及钉螺的传入.

Surveillance of Schistosomiasis in Guangzhou City after the Interdiction of the Disease

Objective To explore the epidemic situation of schistosomiasis after interdicted the transmission of the disease in Huadu and Zengeheng section of Guangzhou. Method The surveillance systems of the snail, the source of contaminate, young age group and the emigrants were established. Results Only sun dried snails but not living snails were found within the range of 3052 acre from 1991 to 2000. 154 out of 4412 serum samples of the young age group and immigrants were seropositive of the skin test, with a positive rate of 3.49%. However, sehistosome eggs were not found by the fecal nylon bag egg-gather hatehing method in these seropositive individuals. Sehistosome eggs were not found in 1278 wild rats examined by the rectum slide eompress method. Conclusions The prevention and eontrol measures for the sehistosomiasis was effeetive in Guangzhou after interdieted the transmission of schistosomiasis. As the prevalenee of sehistosomiasis was uprising in several provinees around the lakes and the disease was out broken in some loeal regions, the surveiUanee system must be strengthened in order to avoid the introduetion of the source of infected snails and disease earriers.