目的　评价天津市2 0 0 3年保持无脊髓灰质炎(脊灰)状态工作。方法　采用描述流行病学方法。结果　天津市2 0 0 3年急性弛缓性麻痹(AFP)病例监测系统报告了17例AFP病例,按照病例分类标准,全部为脊灰排除病例,<15岁儿童非脊灰AFP病例报告发病率为1. 2 7/10万。合格粪便标本采集率为10 0 % ,其它各项监测指标均达到世界卫生组织和卫生部要求。2 0 0 3年全市常规免疫共接种口服脊灰疫苗(OPV) 2 93714人次,基础免疫报告接种率达99 .2 3% ,对全市2 15 6名儿童调查OPV接种率为98 .5 8%。2 0 0 3年12月5～10日和2 0 0 4年1月5～10日在流动人口聚集地、城乡结合部及常规免疫薄弱地区开展以流动儿童为主的查漏补种活动,共调查流动儿童175 30人,查出≥12月龄未免疫或未全程免疫儿童4 36 4人,占调查流动儿童的2 4 . 9% ,两轮共补服OPV 2 4 6 70人份。两轮质量评估共调查3189名儿童,除3人拒服外,未发现漏种儿童。结论　天津市仍保持无脊灰状态。 Objective To evaluate the maintenance of poliomyelitis-free status in Tianjin in 2003. Methods used to describe epidemiological methods. Results AFP cases monitoring system in Tianjin reported 17 AFP cases in 2003. According to the case classification criteria, all were polio-negative cases. The incidence of non-polio AFP cases in children <15 years old was 1. 2 7/10 million. The sampling rate of qualified stool specimens was 100%. Other monitoring indicators met the requirements of the World Health Organization and the Ministry of Health. The city’s routine immunization was carried out with 209,714 oral poliovirus (OPV) and 99.23% of the basic immunization reports, and the survey of 2,156 children in the city was 98.58% . From December 5 to December 10, 2003, and from January 5 to January 10, 2004, leak detection and replanting activities mainly involving floating children were carried out in the floating population centers, the urban-rural integration areas and the routine immunization areas. A total of 175 30 migrant children were investigated. Among them, 4 364 were detected as non-immunized or under-immunized children 12 months of age, accounting for 24.9% of migrant children surveyed, with a total of 24,670 OPVs in two rounds. Two rounds of quality assessment of a total of 3189 children surveyed, with the exception of 3 people refused to convince, did not find leakage of children. Conclusion Tianjin remains polio-free.