2013-2022年湖北省武汉市血吸虫病疫情趋势分析

Prevalence of schistosomiasis in Wuhan, Hubei, 2013−2022

  • 摘要:
    目的 回顾分析2013—2022年湖北省武汉市血吸虫病疫情趋势,为推进实现血吸虫病消除目标提供科学依据。
    方法 收集武汉市2013—2022年血吸虫病疫情资料,描述流行乡镇类别、人群病情、耕牛病情、螺情及变化情况,使用χ2趋势检验分析人群血检阳性率随年份的变化趋势。
    结果 武汉市已于2019年达到传播阻断标准,2022年有7个区达到消除标准;2013—2022年未发现本地感染的急性血吸虫病病例、本地感染的耕牛,人群血检阳性率不同年份间差异有统计学意义,呈逐年下降趋势(χ22435.039P<0.001);有螺总面积由12791.36 hm2减少到8807.44 hm2,减幅31.15%,活螺密度由2013年的0.0324只/0.11m2减少至2022年的0.0237只/0.11m2,2013—2022年随年份变化的垸内和垸外钉螺面积差异有统计学意义(χ2=74.956,P<0.001)。
    结论 武汉市血吸虫病疫情呈持续下降趋势,处于传播阻断向消除迈向的关键阶段。 下一步应继续完善监测预警体系,持续开展血吸虫病病例监测、流行因素监测和风险监测,及时处置潜在风险;同时进一步压缩钉螺垸内面积,加强健康教育和科普宣传,加快推进血吸虫病消除进程。

     

    Abstract:
    Objective To understand the prevalence of schistosomiasis in Wuhan of Hubei province from 2013 to 2022 and provide evidence support to facilitate the elimination of schistosomiasis.
    Methods The prevalence data of schistosomiasis in Wuhan from 2013 to 2022 were collected, including epidemic area type, prevalence in human, prevalence in cattle and oncomelania information, for a descriptive analysis. The changing trend of the positive rates of blood test and stool test were analyzed with trend χ2 test.
    Results Schistosomiasis transmission interruption was achieved in Wuhan in 2019, and the elimination of schistosomiasis was achieved in 7 districts in Wuhan in 2022. No local acute schistosomiasis cases or infected farm cattle were found from 2013 to 2022, and the positive rate of human blood test showed a decreasing trend year by year, the differences were significant (χ2=2435.039, P<0.001); The total area of oncomelania decreased from 12791.36 hm2 to8807.44 hm2, a decrease of 31.15%. The density of live oncomelania decreased from 0.0324 per frame in 2013 to 0.0237 per frame in 2022. There was significant difference between the area of oncomelania in embankment and the area of oncomelania outside embankment from 2013 to 2022 (χ2=74.956, P<0.001).
    Conclusion The prevalence of schistosomiasis in Wuhan showed a continuous downward trend from 2013 to 2022 and it is a critical period from transmission interruption to elimination of schistosomiasis. It is necessary to further improve the surveillance and early warning system, continuously carry out schistosomiasis case, influencing factor and risk surveillance and conduct timely response to potential risk. Meanwhile, the oncomelania area in embankment should be further reduced and health education should be further strengthened to facilitate the elimination of schistosomiasis.

     

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