一直以来,阿富汗、巴基斯坦和尼日利亚三个国家从未阻断脊髓灰质炎(脊灰)野病毒(Wild Poliovirus,WPV)的传播。2003年以来,尼日利亚已导致25个已实现无脊灰国家发生WPV输入。2012年,尼日利亚政府为消灭脊灰启动应急指挥中心(Emergency Operations Centre,EOC),并执行国家应急行动计划。2013年,修订该计划的优先顺序:①提高补充免疫活动(Supplemental Immunization Activities,SIAs)质量;②对常规免疫覆盖不到的人群实施免疫策略;③对安全无保障的地区采 All along, three countries, Afghanistan, Pakistan and Nigeria have never blocked the transmission of poliovirus (WPV). Since 2003, Nigeria has led to the WPV inputs of 25 poliovirus-naive countries. In 2012, the Nigerian government launched an Emergency Operations Center (EOC) for polio eradication and implemented a national contingency plan of action. In 2013, the priority of the program was revised: (1) to improve the quality of Supplemental Immunization Activities (SIAs); (2) to implement immunization strategies for those with routine immunization coverage; (3) to adopt safe and insecure areas