调查区位于松花江支流西北河沿岸,系朝鲜族居民集居区。居民的华支睾吸虫皮试阳性率高达34％,皮试阳性者的粪检阳性率为45.7％。按朱氏分类方案,属三级感染地区。表明我国北方严寒地区仍有适宜于 The investigation area is located along the northwestern river tributary of the Songhua River and a cluster of Korean residents. Residents of Clonorchis sinensis skin test positive rate as high as 34%, skin test positive stool test positive rate was 45.7%. By Zhu classification scheme, is a three-tier infected area. That northern China is still suitable for cold areas