Abstract: Objective　To monitor the epidemic status of human soil?borne nematodiasis in Danyang City, so as to provide scientific evidence for formulating control measures. Methods　The soil?borne nematode infections were tested using a modified Kato?Katz technique among residents aged more than 3 years living in Danyang City from 2012 to 2018, and the Enterobius vermicularis eggs were detected using the transparent adhesive tape anal swab method among children at ages of 3 to 12 years. Results　A total of 13 540 residents were monitored for soil?borne nematode infections from 2012 to 2018, and the prevalence of human soil?borne nematode infections was 0.45%. The prevalence of Ascaris lumbricoides, Trichuris trichura and Enterobius vermicularis infections was 0.32%, 0.12% and 0.01%, respectively, and a single parasite infection was predominant. There were significant differences in the prevalence of soil?borne nematode (χ2 = 42.610, P < 0.05), A. lumbricoides (χ2 = 26.276, P < 0.05) and T. trichura (χ2 = 20.692, P < 0.05). The prevalence of human soil?borne nematode infections was 0.45% in males and 0.47% in females, and lower prevalence was found in local residents than in floating population (0.28% vs. 0.66%; χ2 = 10.561, P < 0.05). The highest infection was found in subjects at ages of 31 to 40 years (0.59%), followed by in subjects at ages of 41 to 50 years (0.56%), and the lowest infection was seen in children at ages of 3 to 5 years (0.27%). In addition, the prevalence of human soil?borne nematode infections varied significantly in occupation (χ2 = 75.692, P < 0.05), with the highest infection seen in boatmen. Among the 5 078 children monitored, the prevalence of E. vermicularis infection was 0.37%, and the prevalence of E. vermicularis infection varied significantly in year (χ2 = 15.466, P < 0.05). Conclusion　The human soil?borne nematode infection is at a low level in Danyang City; however, the surveillance of soil?borne nematodiasis remains to be intensified in children living in rural areas and immigrant populations.

Key words: Soil?borne nematodiasis, Ascaris lumbricoides, Trichuris trichura, Enterobius vermicularis, Surveillance, Danyang City

摘要： 目的　监测2012–2018年丹阳市人群土源性线虫病流行状况，为制定防控措施提供科学依据。方法　2012–2018年对丹阳市3周岁以上居民采用改良加藤厚涂片法检测土源性线虫感染情况，其中3～12周岁儿童同时采用透明胶纸肛拭法检测蛲虫卵。结果　2012–2018年，丹阳市共开展土源性线虫病监测13 540人，人群土源性线虫感染率为0.45%。检出的感染虫种有蛔虫、鞭虫和蛲虫，感染率分别为0.32%、0.12%和0.01%；以单虫种感染为主。各年度人群土源性线虫总感染率、蛔虫感染率和鞭虫感染率间差异均有统计学意义（χ2 = 42.610、26.276、20.692，P均 < 0.05）。男性和女性人群土源性线虫平均感染率分别为0.45%和0.47%；本地人群和流动人群平均感染率分别为0.28%和0.66%，差异有统计学意义（χ2 = 10.561，P < 0.05）。各年龄组中以31 ~岁组感染率最高（0.59%），41 ~岁组次之（0.56%），最低为3 ~岁组（0.27%）。不同职业人群土源性线虫感染率差异有统计学意义（χ2 = 75.692，P < 0.05），其中以船员感染率最高。儿童蛲虫监测共5 078人，平均感染率为0.37%；各年度儿童蛲虫感染率差异有统计学意义（χ2 = 15.466，P < 0.05）。结论　丹阳市人群土源性线虫感染已处于较低流行水平，但仍应加强对农村儿童和外来流动人群的监测。

关键词: 土源性线虫病, 蛔虫, 鞭虫, 蛲虫, 监测, 丹阳市