Yin-Ping Zuo, Dao-Jian Zhu, Guang-Lin Du, Kai Tang, Yu-Cai Ma, Zheng-Qiu Zhang, Shao-Zhou Chen, Fubiao Wang, Hong-Ping Tang, Jin Zhang, Le-Ping Sun
Yangzhou Municipal Center for Disease Control and Prevention, Jiangsu Province, Yangzhou 225000, China.
Yangzhou Municipal Office of Leading Group for Schistosomiasis and Endemic Diseases Control, Jiangsu Province, China.
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi. 2016 Aug 2;28(4):353-357. doi: 10.16250/j.32.1374.2016160.
To evaluate the potential risk of schistosomiasis transmission in the area along the Yangtze River in Yangzhou City, so as to provide evidences for establishing a post-transmission surveillance system for schistosomiasis in marshland regions.
The water infectivity, floating boatmen and fishermen infection, reservoir host infection and wild feces contamination were investigated in five districts/counties along the Yangtze River in Yangzhou City, including Guangling, Hanjiang, Jiangdu, Yizheng and Development Zone, and the transmission factors and risky characteristics were assessed after interruption of schistosomiasis transmission in marshland regions.
A total of 15 key water regions were identified in the area along the Yangtze River in Yangzhou City in 2015. A total of 1 500 sentinel mice were placed, after breeding, their overall survival rate was 99.33%; 1 490 were dissected, with no schistosome infection. Of the 5 576 floating boatmen and fishermen examined, no schistosome infection was observed, and among the 3 566 domestic animals (including 171 cattle, 1 895 sheep and 1 500 pigs), no infections were detected. During the period between January and March, 2016, there were 3 200 mouse traps placed on 8 marshlands, and 62 wild mice were captured from 6 marshlands, with a capture rate of 1.94%, and no schistosomeinfected wild mice were seen. In addition, there were 35 pieces of fresh wild feces captured from 7 marshlands, including 11 pieces of bovine feces (31.43%), 17 pieces of sheep feces (48.57%), 2 pieces of dog feces (5.71%) and 5 pieces of other feces (14.29%), and no infections were detected.
There is a low risk of schistosomiasis transmission in the area along the Yangtze River in Yangzhou City. However, the contamination of feces from bovine and sheep that are freely pastured on marshlands is a big threat to schistosomiasis control.
评估扬州市长江沿线地区血吸虫病传播的潜在风险，为建立滩涂地区血吸虫病传播阻断后监测系统提供依据。
对扬州市长江沿线的广陵区、邗江区、江都区、仪征市和开发区5个区/县进行水体感染性、流动船民和渔民感染情况、保虫宿主感染情况及野外粪便污染情况调查，并对滩涂地区血吸虫病传播阻断后传播因素及风险特征进行评估。
2015年扬州市长江沿线共确定15个重点水域。共投放1500只哨兵鼠，饲养后总体存活率为99.33%；解剖1490只，未发现血吸虫感染。在检查的5576名流动船民和渔民中，未观察到血吸虫感染，在3566头家畜（包括171头牛、1895只羊和1500头猪）中，未检测到感染。2016年1月至3月期间，在8块滩涂上放置了3200个鼠夹，从6块滩涂捕获62只野鼠，捕获率为1.94%，未发现感染血吸虫的野鼠。此外，从7块滩涂采集到35份新鲜野外粪便，其中牛粪11份（31.43%）、羊粪17份（48.57%）、狗粪2份（5.71%）、其他粪便5份（14.29%），均未检测到感染。
扬州市长江沿线地区血吸虫病传播风险较低。然而，滩涂地区自由放牧的牛羊粪便污染对血吸虫病防治构成较大威胁。
