按照浙江省土源性线虫病监测方案和实施细则的要求,于2015-2018年分别对杭州市土源性线虫固定监测点建德市,及萧山区、富阳区、桐庐县、临安区和淳安县等5个流动监测点开展调查。共调查7 911人,检出土源性线虫阳性者145例,感染率为1.83%。其中蛔虫和鞭虫感染均为4例,钩虫感染137例,未检出蛲虫感染。总感染率从2015年的2.32%（89/3 829）下降至2018年的0.54%（11/2 044）,下降率为76.72%。对137份钩虫镜检阳性粪样采用试管滤纸培养法进行钩蚴培养,阳性率为71.53%(98/137）,美洲钩虫、十二指肠钩虫和合并感染分别为80、13和5例。男性和女性土源性线虫感染率分别为2.00%（77/3 845）、1.67%（68/4 066）。> 60岁年龄组感染率最高,为3.20%（101/3 156）,且感染率随着年龄的增长呈上升趋势（χ² = 63.061,P < 0.01）。职业分布以农民感染率最高,为2.13%（144/6 763）。初中文化程度感染率最高,为2.07%（48/2 313）。100份环境土壤样品中,土壤人蛔虫卵检出率为2.00%（2/100）,未检出钩蚴。提示2015-2018年杭州市监测点土源性线虫感染率呈下降趋势。

To understand the prevalence of soil-transmitted nematode (STN) infection in Zhejiang Province, a survey was carried out in Jiande city, a fixed monitoring site and in Xiaoshan, Fuyang, Linan Districts, Tonglu, Chun’an Counties, the five mobile monitoring sites of STN infections from 2015 to 2018 according to the requirements of Zhejiang Surveillance Plan and Implementing Approaches of STN. A total of 7 911 residents were enrolled in the survey, 145 of them were positive for STN infections and the infection rate was 1.83%. Among them, 4 cases were infected with Ascaris lumbricoides and Truchuris trichiura, and 137 cases were infected with hookworm. Enterobius vermicularis was not detected. The overall prevalence of STN decreased from 2.32% (89/3 829) in 2015 to 0.54% (11/2 044) in 2018, with a decrease rate of 76.72%. Hookworm larvae were cultured from 137 hookworm egg positive feces using test-tube filter paper culture method, 98 of them were larva-positive (71.53%). In which 80 cases were infected with Necator americanus, 13 cases with Ancylostoma duodenale and 5 cases were fixed infections. The infection rates of STN for male and female were 2.00% (77/3 845) and 1.67% (68/4 066), respectively. The highest infection rate was 3.20% (101/3 156) in the age group over 60, and the infection rate increased with age (χ² = 63.061, P < 0.01). With respect of education and occupational distribution, the highest prevalence of STN infection was found in students in junior middle school (2.07%, 48/2 313) and in farmers (2.13%, 144/6 763). Among 100 examined soil samples, the detection rate of A. lumbricoides eggs was 2.00% (2/100), and no hookworm larva was detected. From 2015 to 2018, the infection rate of STN in monitoring sites in Hangzhou showed a downward trend.