目的 了解安庆市2005~2017年血吸虫病发病情况,分析血吸虫病流行趋势和强度。方法 收集血吸虫病病情、螺情相关资料,分析血吸虫病流行状况和特点。结果 全市人群血吸虫感染率2005~2017年呈下降趋势, (χ²_趋势=16447.217,P< 0.001); 全市血吸虫病人数由2005年9 082人下降到2017年1 704人,下降了81.24%;全市已连续7年未发现急性血吸虫病病例;近两年未查出阳性耕牛。2017年钉螺面积6 464.11万平方米,比2005年增加了6.98%;全市自2013年以来,连续5年未查出阳性钉螺;全市钉螺密度和阳性钉螺密度逐年下降,2017年钉螺密度和阳性钉螺密度分别是0.13只/0.1 m²、0.00只/0.1 m²较2005年0.84 只/0.1 m² 、0.00316 只/0.1 m² 下降了84.66%、100%。结论 安庆市通过血吸虫综合防治策略的实施,已有效控制血吸虫病疫情,但钉螺存在扩散的风险。

Objective To understand the incidence of schistosomiasis in Anqing City from 2005 to 2017,and analyze the trend and intensity of schistosomiasis. Methods The data of schistosomiasis and snails were collected to analyze the prevalence and characteristics of schistosomiasis. Results The infection rate of schistosomiasis in the city showed a downward trend from 2005 to 2017 (χ²_trend=16447.217,P< 0.001).The number of schistosomiasis in the city dropped from 9 082 in 2005 to 1 704 in 2017, a decrease of 81.24%.No cases of acute schistosomiasis were found for 7 consecutive years, and infected cattle were not detected in the past two years.In 2017, the area of snails was 6 464.11 million m², with an increase of 6.98% over 2005.Since 2013, no schistosome infected snails had been detected for 5 consecutive years.The density of snails and infected snails have decreased year by year, and the density of snails and the density of infected snails were 0.13/0.1m², 0.00/0.1m², respectively, which were 0.84/0.1m² and 0.00316/0.1m² decreased by 84.66% and 100%. Conclusion Anqing City has effectively controlled the schistosomiasis epidemic through the implementation of the comprehensive control strategy of schistosomiasis,but there is a risk of snails spreading .