[Progress of schistosomiasis control in People's Republic of China in 2021].

• DOI: 10.16250/j.32.1374.2022132
• Publication Date: 2022-08-22
• Authors: L J Zhang; Xu Zhi-Min; Fan Yang; Junyi He; H Dang; Y L Li; C L Cao; Jie Xu; S Z Li; Xiao‐Nong Zhou
• Keywords: Oncomelania; CITES; Endemic diseases; People's Republic

This report presented the endemic status of schistosomiasis and analyzed data collected from national prevention control system surveillance sites in People's Republic China at a level 2021. Among 12 provinces (municipality autonomous region) for China, Shanghai Municipality, Zhejiang Province, Fujian Guangdong Province Guangxi Zhuang Autonomous Region continued to consolidate achievements elimination, Sichuan Jiangsu maintained criteria transmission interruption, while Yunnan, Hubei, Anhui, Jiangxi Hunan by end A total 451 counties (cites, districts) were found be 2021, with 27 571 villages covering 73 250 600 people risk infections. (cities, districts), 75.17% (339/451), 22.17% (100/451) 2.66% (12/451) achieved interruption schistosomiasis, respectively. By 29 037 cases advanced documented China. In 4 405 056 individuals received serological tests 72 937 sero-positive. 220 629 stool examinations 3 positive. snail survey was performed 19 291 Oncomelania snails 7 026 villages, accounting 36.42% all surveyed identified emerging habitats. Snail an area 686 574.46 hm2 191 159.91 habitats found, including 1 063.08 5 113.87 reemerging 525 878 bovines raised areas 115 437 examinations, 231 positives detected. 128 719 no identified. there 927 patients receiving praziquantel chemotherapy, 729 113 person-time 256 913 herd-time given expanded chemotherapy. chemicals 117 372.74 habitats, actual chemical treatment 65 640.50 hm2, environmental improvements 244.25 hm2. Data showed that mean prevalence Schistosoma japonicum infections both zero humans S. infection detected snails. The results demonstrate overall remained low 2021; however, progress towards elimination slowed rebounded mildly. Strengthening researches on diffusion control, improving forecast are recommended prevent schistosomiasis.［摘要］ 本文通报了 2021 年全国血吸虫病疫情, 并对全国血吸虫 病预防控制工作数据和国家血吸虫病监测点疫情监测数据进行 了汇总和分析。截至 年底, 全国 个血吸虫病流行省 (直辖 市、自治区) 中, 上海、浙江、福建、广东、广西等 个省 (直辖市、自 治区) 继续巩固血吸虫病消除成果, 四川、江苏省维持传播阻断标 准, 云南、湖北、安徽、江西、湖南等 个省维持传播控制标准。全 国共有 个血吸虫病流行县 (市、区)、27 个流行村, 流行村 总人口 325.06 万人; 个流行县 (市、区) 339 个 (75.17%) 达 到血吸虫病消除标准、100 (22.17%) 达到传播阻断标准、12 (2.66%) 达到传播控制标准。2021 年, 全国尚存晚期血吸虫病患 者 例。2021 全国共开展血吸虫病血检查病 人, 阳性 人; 开展粪检查病 人。全国共有 个流行村开展了钉螺分布调查, 个村查出钉螺, 占调 查总数的 36.42%, 新查出 个有螺村; 累计查螺 查出有螺面积 其中新发现有螺面积 复现钉螺面积 hm2。血吸虫病流行区现有存栏耕牛 头, 累计血检查病 437头, 头; 未发现粪检阳性耕牛。全国共治疗血吸虫病患者 例, 扩大化疗 人·次, 扩大化疗耕牛 头·次; 累计开展药 物灭螺总面积 实际药物灭螺 环境改造灭螺 hm2。2021 年全国血吸虫病监测点中, 居民和耕牛平均血吸虫感染率均为 0, 未发现感染性钉螺。疫情数据分析显示, 年全国血吸虫病呈低度流行水平, 但达标进程减缓、钉螺面积略有反弹; 需加强钉螺扩散与控制研究, 强化血吸虫病监测预警, 防止疫情反弹。.