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全球阻断脊灰野病毒传播的活动已取得了显著的进展。世界范围内脊灰呈地方性流行的国家从1988年的125个以上(年病例>350 000例)减少到2003年底的6个(尼日利亚、印度、巴基斯坦、埃及、尼日尔和阿富汗),到2004年1月21日,只报告了628例病例。2003年,全球报告的所有病例中,90％以上的来自尼日利亚(305),印度(220),巴基斯坦(90)。尼日利亚首次取代印度成为报告病例数最大的国家。流行病学和病毒学资料已证实阿富汗和尼日尔由于反复分别从巴基斯坦和印度输入病毒,其局部地方脊灰病毒已呈地方性流行。 到目前为止,消除脊灰的努力估计预防了500万例麻
Significant progress has been made in the global campaign to block the transmission of poliovirus. The number of polio endemic countries in the world decreased from over 125 in 1988 (350,000 cases per year) to 6 at the end of 2003 (Nigeria, India, Pakistan, Egypt, the Niger and Afghanistan) and by 2004 On January 21, only 628 cases were reported. In 2003, more than 90% of all cases reported worldwide were from Nigeria (305), India (220) and Pakistan (90). Nigeria replaced India for the first time to become the country with the largest number of reported cases. Epidemiological and virological information has confirmed that endemic poliovirus has been endemic in Afghanistan and the Niger as a result of repeated import of the virus from Pakistan and India. To date, polio eradication efforts have been estimated to prevent 5 million cases of marijuana