2001～2003年陕西省榆林市榆阳区大骨节病病情监测

目的监测陕西省大骨节病历史重病区病情动态。方法选择榆林市榆阳区4个病区村，对7-12岁儿童进行临床检查、X线拍片及发硒检测。结果近3年榆阳区大骨节病临床患病率稳定在4．61％-6．25％，临床未检出Ⅰ度以上病例；X线阳性率在14．20％～18．89％设动，骨端改变检出率均大于干骺端改变检出率；儿童发硒由2000年的0．233mg／kg上升到2002年的0.316mg／kg。结论从1997年起，在榆阳区实施硒盐防治大骨节病后，虽然病情呈下降趋势，但仍在较高水平波动。建议在做好硒盐防治工作的基础上，根据当地特点，采取植树植草治沙、食用非病区粮食的防治措施。

The monitoring report of Kaschin-Beck disease prevalence rate in Yuyang county of Shaanxi province from 2001 to 2003

Objective To monitor Kaschin-Beck disease (KBD) prevalence rate in severe regions of Shaanxi province from 2001 to 2003. Methods In this surveillance, children aged 7 to 12 years in four villages were examined on clinical disease state,X-ray and hair selenium level. Results The results showed clinical detectable rates fluctuated between 4.61% and 6.25%, X-rays positive rates fluctuated between 18.89% and 14.20% in the last 3 years in Yuyang county. The hair selenium level increased from 0.233 mg/kg of 2000 to 0.316 mg/kg of 2002. Conclusions Kaschin-Beck disease prevalence rate in Yuyang county is still higher after eating selenium salt. We suggest to take some measures such as increasing planting trees and grass to deal with sands, and importing cereals from non-KBD areas.