Zhang J F, Du H J, Yan X L, Yu L L, Yang M J, Liu R, Gu S F, Wen L Y
Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China.
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi. 2021 Apr 12;33(2):195-199. doi: 10.16250/j.32.1374.2020302.
To analyze the endemic situation of schistosomiasis in national surveillance sites of Zhejiang Province, so as to provide the scientific evidence for formulating the new schistosomiasis surveillance program and consolidating schistosomiasis elimination achievements.
A total of 54 to 55 national surveillance sites and 6 risk monitoring sites were assigned in historical endemic regions of Zhejiang Province from 2015 to 2019, where the infections in humans, livestock, snails and wild feces were monitored. All data pertaining to the surveillance results were descriptively analyzed.
There were 34 530 person-time local residents receiving serological screening for infections in national surveillance sites of Zhejiang Province from 2015 to 2019, and the seroprevalance of infections were 0.29% to 0.68%; however, no egg-positives were detected. During the period from 2015 to 2019, there were 62 086 person-time mobile populations receiving serological screening for infections in national surveillance sites of Zhejiang Province, and the seroprevalance of infections were 0.32% to 0.56%; additionally, there were 27 egg-positives identified, including 3 imported cases with schistosomiasis haematobia and one case with acute schistosomiasis japonica, indicating that the adjusted prevalence of infections were 0.01% to 0.07% among mobile populations. A total of 829 livestock were examined for infections, with no positives detected. There were 10.55 hm and 2.89 hm snail habitats found in national surveillance sites and risk monitoring sites of Zhejiang Province during the 5-year period, respectively; however, no infections were identified in snails. Moreover, a total of 305 wild feces were tested for infections, and no egg-positives were identified.
The schistosomiasis elimination achievement have been consolidated in Zhejiang Province; however, the risk factors of re-emerging schistosomiasis have not been completely eliminated, such as residual snails and imported schistosomiasis cases. Further surveillance and control activities of snails and the source of infections should be reinforced.
分析浙江省国家级监测点血吸虫病的流行情况，为制定新的血吸虫病监测方案和巩固血吸虫病消除成果提供科学依据。
2015年至2019年，在浙江省历史流行区共设置54至55个国家级监测点和6个风险监测点，对人群、家畜、钉螺和野粪感染情况进行监测。对监测结果的所有数据进行描述性分析。
2015年至2019年，浙江省国家级监测点共有34530人次本地居民接受血吸虫感染血清学筛查，血清阳性率为0.29%至0.68%；但未检测到粪检阳性者。2015年至2019年期间，浙江省国家级监测点共有62086人次流动人口接受血吸虫感染血清学筛查，血清阳性率为0.32%至0.56%；此外，共发现27例粪检阳性者，其中包括3例埃及血吸虫病输入病例和1例急性日本血吸虫病病例，表明流动人口中血吸虫感染校正患病率为0.01%至0.07%。共检查829头家畜的血吸虫感染情况，未检测到阳性。5年期间，浙江省国家级监测点和风险监测点分别发现钉螺孳生地10.55公顷和2.89公顷；但未在钉螺中检测到血吸虫感染。此外，共检测305份野粪的血吸虫感染情况，未发现粪检阳性者。
浙江省已巩固血吸虫病消除成果；然而，血吸虫病重新出现的危险因素尚未完全消除，如残余钉螺和输入性血吸虫病病例。应加强对钉螺和感染源的进一步监测与防控工作。
