了解2016—2020年北京市土源性线虫病和华支睾吸虫病人群感染状况,为制定防控措施提供科学依据。2016—2020年,北京市每年设立3个监测点,包括土源性线虫病固定监测点和流动监测点各1个,华支睾吸虫病流动监测点1个,开展人群土源性线虫和华支睾吸虫感染状况监测,各监测点按照地理方位划分为东、西、南、北、中5个片区,每片区抽取1个乡（镇）的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,采用改良加藤厚涂片法（一粪两检）检测虫卵,土源性线虫病监测点对3~9岁儿童加做透明胶纸肛拭法检测蛲虫卵。计算感染率,感染率间差异采用卡方检验。从传染病监测报告系统和流行病学调查资料收集华支睾吸虫病病例信息,对感染地和感染来源进行回顾性调查分析。2016—2020年,共调查15 200人,发现感染者10人,总感染率为0.07%（10/15 200）,蛔虫和蛲虫感染率分别为0.06%（9/15 200）和0.01%（2/15 200）,未检出华支睾吸虫感染者。山区感染率为0.13%（6/4 697）,平原、丘陵和盆地等的感染率为0.04%（4/10 503）,两者差异无统计学意义（P > 0.05）。男性感染率为0.04%（3/7 148）,女性感染率为0.09%（7/8 052）,差异无统计学意义（P > 0.05）。感染者年龄在33~65岁,感染者职业主要为农民（6人）,其次为家务及待业人员（2人）。2016—2020年,北京市共报告华支睾吸虫病16例,14例有食用生鱼片史,2例有食用未熟透的鱼肉史。北京市土源性线虫病感染率已较低,近郊和远郊少数农村是防控重点地区;华支睾吸虫病例时有报告,应加强监测和健康教育。

To understand the infection status of soil-transmitted helminthes(STH) and the prevalence of clonorchiasis in Beijing from 2016 to 2020, and provide scientific basis for formulation of prevention and control measures. Three surveillance sites were set up every year in Beijing to survey the infection status of STH and clonorchiasis prevalence, including one fixed surveillance site and one mobile surveillance site for STH, and one mobile surveillance site for Clonorchis infection. Each surveillance site was divided into 5 parts according to the geographical directions, including the east, west, south, north and middle parts, and a township was randomly selected from each part. Then, an administrative village was randomly selected from each township, where 200 permanent residents over 3 years of age were randomly selected using the cluster sampling method. The participants were surveyed by fecal examination for helminth infection using the modified Kato-Katz thick smear method (one sample, two slide-readings). Children aged 3 to 9 years in the surveillance sites for STH further underwent pinworm infection examination using the anal transparent tape test. The data of clonorchiasis were obtained from the Infectious Disease Surveillance Reporting System and epidemiological investigation, the place and source of infection were investigated and analyzed retrospectively. A total of 15 200 residents were surveyed during 2016—2020, and 10 were found positive. The overall prevalence was 0.07% (10/15 200). The infection rate of Ascaris lumbricoides and pinworm was 0.06% (9/15 200) and 0.01% (2/15 200), respectively. No resident was found infected by Clonorchis sinensis. The infection rate was 0.13% (6/4 697) in mountainous areas, and 0.04% (4/10 503) in plain, hilly, and basin areas (P > 0.05). The infection rate in females was 0.09% (7/8 052), and that in males was 0.04% (3/7 148), with no significant difference (P > 0.05). The residents infected were between the ages of 33 and 65, and their occupation were mainly farmers (6 persons), followed by unemployed persons (2 persons). A total of 16 cases of clonorchiasis were reported in Beijing during 2016—2020. Among them, 14 cases had eaten sashimi and two cases had eaten insufficiently cooked fish. The infection rate of soil-transmitted helminths is very low. Rural areas in the suburbs and outer suburbs are the focus of prevention and control. Clonorchiasis cases were reported occasionally, thus surveillance and health education should be strengthened.