Methods:Transparent adhesive fape was used to detecf the infection rate and ointment containing mainly metronidazole and sulphur was prepared and used for treatment.

• 方法:采用透明胶纸粘贴法对学员进行蠕形螨检查,对阳性者用甲硝唑硫磺软膏进行治疗,三个月后观察疗效。