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世界卫生大会(WHA)于1988年启动全球消灭脊髓灰质炎(脊灰)倡议行动(Global Polio Eradication Initiative,GPEI),并于2012年5月宣布实现消灭脊灰是全球公共卫生的紧急事件。2012年全球报告的脊灰野病毒(Wild Poliovirus,WPV)病例数处于历史最低水平。尼日利亚为三个从未阻断WPV传播国家之一(其余2个国家为巴基斯坦和阿富汗),自2003年起其导致25个已实现无脊灰国家发生WPV输入。本
The World Health Assembly (WHA) launched the Global Polio Eradication Initiative (GPEI) in 1988 and announced in May 2012 that the eradication of polio is a global public health emergency. The number of cases of wild poliovirus (WPV) globally reported in 2012 was at the lowest level in history. Nigeria is one of three countries that have never blocked the spread of WPV (the remaining two are Pakistan and Afghanistan), which has led to WPV inputs in 25 polioviruses since 2003. this