Abstract: Objective　To investigate the prevalence of soil⁃transmitted nematode human infections in Jurong City from 2016 to 2020, so as to provide the scientific evidence for formulating the control strategy. Methods　During the period from 2016 to 2020, the permanent residents at ages of over 3 years living in Jurong City were selected as the study subjects. Stool samples were collected for the detection of soil⁃transmitted nematode eggs using the modified Kato⁃Katz thick smear method (two detections for one stool sample), and the species of hookworm was identified in stool⁃positive stool samples using the culture method. The prevalence and intensity of soil⁃transmitted nematode infections were calculated, and the change of the infection prevalence among years was examined using the Cochran⁃Armitage test for trend. Results　A total of 10 011 people⁃time populations were detected for soil⁃transmitted nematode infections in Jurong City from 2016 to 2020, and 56 egg⁃positives were identified, with mean prevalence of 0.56%. The prevalence of soil⁃transmitted nematode human infections appeared a tendency towards a decline year by year in Jurong City ([χ2]trend = 5.15, P < 0.01). The mean prevalence of hookworm, Ascaris lumbricoides and Trichuris trichiura infections was 0.44%, 0.11% and 0.20% in Jurong City from 2016 to 2020, respectively, and individuals with hookworm infections accounted for 78.57% of all cases with soil⁃transmitted nematode infections. Single parasite (98.21%) and mild infection were predominant in individuals with soil⁃transmitted nematode infections, and no multiple infections were seen after 2016. Conclusions　The prevalence of human soil⁃transmitted nematodiasis is low in Jurong City. Based on reinforcement of soil⁃transmitted nematodiasis surveillance, an increase in the health education investment is required to consolidate the control achievements.

Key words: Soil?transmitted nematodiasis, Surveillance, Jurong City

摘要： 目的　了解2016—2020年句容市人群土源性线虫感染情况，为制定土源性线虫病防治策略提供科学依据。方法　2016—2020年，以句容市3周岁以上常住居民为监测对象，采集监测对象粪便，用改良加藤厚涂片法（1粪2检）检查土源性线虫虫卵，钩虫感染阳性者粪便采用钩蚴培养法鉴别虫种。计算居民土源性线虫感染率和感染度，应用Cochran⁃Armitage趋势检验法对逐年土源性线虫感染率进行趋势检验。结果　2016—2020年，句容市累计开展人群土源性线虫感染监测10 011人·次，累计检出土源性线虫感染病例56例，平均感染率为0.56%，感染率呈逐年下降趋势（[χ2]趋势 = 5.15，P < 0.01）。钩虫、蛔虫、鞭虫平均感染率分别为0.44%、0.11%、0.20%，其中钩虫感染者占总感染人数的78.57%；土源性线虫感染者以单虫种（98.21%）、轻度感染为主，2016年后未见多重感染。结论　句容市人群土源性线虫病已处于低流行水平。今后应在加强土源性线虫病监测的基础上，加强健康教育投入，以巩固已取得的防治成效。 　

关键词: 土源性线虫病, 监测, 句容市