Epidemic surveillance in national schistosomiasis surveillance sites in Liyang, Jiangsu, 2015-2019

Abstract

Objective To analyze the schistosomiasis epidemic trend at the national surveillance site in Liyang city during 2015-2019, and we provide scientific basis for the prevention and control measures.

Methods According to the requirements of the National Schistosomiasis Monitoring Program (2014), schistosomiasis infection, snail status and wild feces monitoring conducted at the national schistosomiasis monitoring sites in Liyang city from 2015 to 2019, and the monitoring results were statistically analyzed.

Results From 2015 to 2019, the positive rate of indirect erythrocyte agglutination test (IHA) for local population in Liyang city was 0.13%, the positive rate of colloidal dye test paper (DDIA) was 0.79%, and the positive rate of fecal test was 0%. The positive rate of IHA, DDIA in migrating population was 0% and 0.90%, and fecal test was 0%. During the five-year monitoring period, only snails were found in 2018. From 2015 to 2019, no wild feces were collected at the monitoring site.

Conclusion The epidemic situation of schistosomiasis in Liyang city is very low, but the risk of schistosomiasis transmission has not been completely eliminated. It is particularly important to strengthen the monitoring of exogenous infectious sources and snail conditions in the region to consolidate the achievements of schistosomiasis control.

Abstract

摘要： 目的 分析2015—2019年江苏省溧阳市国家血吸虫病监测点疫情监测结果, 为制定巩固消除血吸虫病策略提供科学依据。 方法 按照《全国血吸虫病监测方案 (2014年版) 》要求, 2015—2019年在溧阳市国家血吸虫病监测点开展人畜血吸虫感染、螺情和野粪监测, 对监测结果进行描述性统计分析。 结果 2015—2019年对溧阳市本地人群间接红细胞凝集试验 (IHA) 和胶体染料试纸条法(DDIA)检测血清抗血吸虫抗体阳性率分别为0.13%和0.79%, 粪检阳性率为0%; 流动人群IHA和DDIA抗体阳性率分别为0%和0.90%, 粪检阳性率为0%; 5年监测期间, 仅2018年查到钉螺。该监测点2015—2019年均未捡获到野粪。 结论 溧阳市血吸虫病疫情已处于极低流行状态, 但血吸虫病传播风险尚未彻底消除。今后应加强输入性传染源和螺情监测, 采取精准血防措施, 早日彻底消除血吸虫病的危害。