中国寄生虫学与寄生虫病杂志 ›› 2025, Vol. 43 ›› Issue (4): 451-457.doi: 10.12140/j.issn.1000-7423.2025.04.001

• 专题报道 • 上一篇    下一篇

2022年全国土源性线虫感染监测情况分析

朱慧慧1(), 黄继磊1, 周长海1,*()(), 诸廷俊1, 赵陆源1, 钱门宝1,2, 李石柱1,2,*()   

  1. 1 中国疾病预防控制中心寄生虫病预防控制所(国家热带病研究中心)传染病溯源预警与智能决策全国重点实验室,国家卫生健康委员会寄生虫病原与媒介生物学重点实验室,世界卫生组织热带病合作中心,科技部国家级热带病国际研究中心上海 200025
    2 上海交通大学医学院-国家热带病研究中心全球健康学院上海 200025
  • 收稿日期:2025-07-10 修回日期:2025-08-25 出版日期:2025-08-30 发布日期:2025-10-09
  • 通讯作者: 李石柱(ORCID:0000-0003-3172-5218),男,博士,研究员,从事寄生虫病防治研究。E-mail:lisz@chinacdc.cn; 周长海,女,学士,副主任技师,从事土源性、食源性寄生虫病防治研究。E-mail:zhouch@nipd.chinacdc.cn
  • 作者简介:朱慧慧(ORCID:0000-0001-7754-8961),女,博士,副研究员,从事土源性、食源性寄生虫病防治研究。E-mail: zhuhh@nipd.chinacdc.cn

National surveillance of soil-transmitted helminth infecions in China in 2022

ZHU Huihui1(), HUANG Jilei1, ZHOU Changhai1,*()(), ZHU Tingjun1, ZHAO Luyuan1, QIAN Menbao1,2, LI Shizhu1,2,*()   

  1. 1 National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; NHC Key Laboratory on Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
    2 School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
  • Received:2025-07-10 Revised:2025-08-25 Online:2025-08-30 Published:2025-10-09
  • Contact: E-mail: lisz@chinacdc.cn; zhouch@nipd.chinacdc.cn

摘要:

目的 了解我国土源性线虫感染流行现状和流行趋势,为开展防控工作提供参考。方法 2022年在30个省(自治区、直辖市)的土源性线虫病国家监测点(县)开展监测工作(西藏未开展)。各监测点从东、西、南、北、中5个片区中各抽取1个行政村,每个行政村整群抽取3周岁以上常住居民200人开展调查,每个监测点共调查1 000人。收集被调查者粪样,采用改良加藤厚涂片法(一粪两检)进行检查和虫卵计数,计算感染率、感染度等,感染率间的比较采用卡方检验。每个行政村随机抽取5户居民,每户采集1份田地/菜园的土样,检测土样中的钩蚴和人蛔虫卵。结果 2022年,30个省(自治区、直辖市)的354个监测点共监测363 603人,土源性线虫总感染率为0.64%(2 330/363 603),其中感染率最高的省份为四川(4.53%,776/17 149),第2~3位为云南(4.31%,646/14 974)和海南(3.98%,123/3 089)。福建、贵州、江西、浙江、重庆、山东、青海、广西、宁夏、安徽、湖南、甘肃、山西、辽宁和广东等15个省(自治区、直辖市)感染率为0.10%~1.50%。吉林、陕西、新疆、江苏、河南、湖北和河北等7个省(自治区)感染率为> 0~< 0.10%,北京、黑龙江、内蒙古、上海和天津等5个省(自治区、直辖市)未查到感染者。女性感染率为0.72%(1 332/184 152),高于男性的0.56%(998/179 451)(χ2 = 39.89,P < 0.05)。≥ 60岁年龄组人群的土源性线虫感染率最高,为1.00%(1 014/100 963),各年龄组间感染率差异有统计学意义(χ2 = 366.01,P < 0.05)。钩虫、蛔虫、鞭虫的感染率分别为0.39%(1 410/363 603)、0.16%(569/363 603)和0.14%(494/363 603),其中轻度感染分别占94.47%(1 332/1 410)、71.00%(404/569)、91.50%(452/494)。田地和菜园的土样中均有检出人蛔虫卵和钩蚴,人蛔虫卵和钩蚴检出率分别为1.24%(29/2 335)、1.11%(26/2 335)。结论 我国土源性线虫病总体已处于低流行水平,但地区和人群分布差异较大,应因地制宜地推动全国土源性线虫病的防控,以及传播控制与阻断工作。

关键词: 土源性线虫, 感染率, 监测, 钩虫, 蛔虫, 鞭虫

Abstract:

Objective To investigate the current status of and trends in prevalence of soil-transmitted helminth (STH) infections in China, so as to provide insights into management of soil-transmitted helminthiasi. Methods In 2022, a nationwide surveillance of soil-transmitted helminthiasis was conducted at designated surveillance sites of soil-transmitted helminthiasis across 30 provinces (autonomous regions/municipalities) in China (this survey was not conducted in Xizang), and a unified sampling method was employed in each surveillance site. One administrative village was selected from eastern, western, southern, northern and central regions, respectively. Two hundred permanent residents at ages of 3 years and older were sampled using a cluster sampling method from each administrative village, with a total of 1 000 individuals in a surveillance site. Participants’ stool samples were collected and tested for STH infections and egg counts using the modified Kato-Katz thick smear method (two slides for one sample). The prevalence and intensity of STH infections were calculated, and differences of prevalence were tested for statistical significance with chi-square test. Five households were randomly selected from each administrative village, and one soil sample was collected from each household farmland/vegetable garden for isolation and characterization of hookworm larvae and detection of Ascaris lumbricoides eggs. Results A total of 363 603 residents from 354 surveillance sites in 30 provinces (autonomous regions/municipalities) were surveyed for STH infections, with an overall infection prevalence of 0.64% (2 330/363 603), with the highest prevalence detected in Sichuan Province (4.53%, 776/17 149), followed by in Yunnan Province (4.31%, 646/14 974) and Hainan Province (3.98%, 123/3 089). Fifteen provinces (autonomous regions/municipalities), including Fujian, Guizhou, Jiangxi, Zhejiang, Chongqing, Shandong, Qinghai, Guangxi, Ningxia, Anhui, Hunan, Gansu, Shanxi, Liaoning, and Guangdong, showed prevalence ranging from 0.10% to 1.50%. Seven provinces (autonomous regions), namely Jilin, Shaanxi, Xinjiang, Jiangsu, Henan, Hubei, and Hebei, exhibited prevalence between > 0 and < 0.10%. No infected cases were detected in five provinces (autonomous regions/municipalities): Beijing, Heilongjiang, Inner Mongolia, Shanghai, and Tianjin. The prevalence of STH infections was higher among females (0.72%, 1 332/184 152) than among males (0.56%, 998/179 451) (χ² = 39.89, P < 0.05). The highest prevalence of STH infections was detected among residents at ages of 60 years and older (1.00%, 1 014/100 963). The differences in prevalence among age groups were statistically significant (χ² = 366.01, P < 0.05). The prevalence rates of hookworm, A. lumbricoides, and Trichuris trichiura were 0.39% (1 410/363 603), 0.16% (569/363 603), and 0.14% (494/363 603), with mild infections accounting for 94.47% (1 332/1 410), 71.00% (404/569), 91.50% (452/494), respectively. Both A. lumbricoides eggs and hookworm larvae were detected in soil samples from farmlands and vegetable gardens. The detection rates of A. lumbricoides eggs and hookworm larvae were 1.24% (29/2 335) and 1.11% (26/2 335), respectively. Conclusion The overall prevalence of soil-transmitted helminthiasis is low in China; however, there are high regional and human disparities. Tailored prevention and control measures should be implemented to promote transmission control and interruption of soil-transmitted helminthiasis in China.

Key words: Soil-transmitted helminthiasis, Infection rate, Surveillance, Hookworm, Ascaris lumbricoides, Trichuris trichiura

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