目的　评价陕西省2 0 0 3年急性弛缓性麻痹(AFP)病例监测系统运行状况,维持无脊髓灰质炎(脊灰)状态。方法　采用描述流行病学方法。结果　陕西省2 0 0 3年AFP病例监测系统共报告178例,其中16 5例为AFP病例,<15岁儿童非脊灰AFP病例报告发病率为1 .89/ 10万,其它各项监测指标均达到世界卫生组织和卫生部要求。省疾病预防控制中心脊灰实验室收到15 4例粪便标本,其中合格粪便标本14 1例,合格粪便标本采集率为85 .5 % ,分离出1株脊灰Ⅱ型疫苗株病毒,非脊灰肠道病毒13株,分离率8 .4 %。结论　要维持无脊灰状态,应继续保持高质量的AFP病例监测,保证高水平的口服脊灰疫苗接种率。 Objective To evaluate the surveillance system of acute flaccid paralysis (AFP) cases in Shaanxi Province in 2003 and maintain poliomyelitis-free (polio) status. Methods used to describe epidemiological methods. Results A total of 178 AFP cases were detected in Shaanxi Province in 2003, of which 165 cases were AFP cases. The incidence of non-polio AFP cases in children <15 years old was 1.89 per 100 000 cases. Other monitoring indicators Both meet the requirements of the World Health Organization and the Ministry of Health. Polio laboratory of the Provincial Center for Disease Control and Prevention received 15 4 stool samples, of which 14 cases of qualified stool samples, qualified stool samples collected rate of 85.5%, isolated a poliovirus type Ⅱ vaccine strain, non-ridge Ash enterovirus 13 strains, separation rate of 8.4%. Conclusion To maintain a non-polio state, high-quality surveillance of AFP cases should be maintained to ensure a high level of oral polio vaccine coverage.