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自从1988年世界卫生大会决议全球根除脊灰后,地方性脊灰流行国家数从125个下降到2003年底的6个。亚洲3个地方性脊灰流行国家(阿富汗、印度和巴基斯坦)继续开展阻断脊灰传播的工作,它们显著增加了强化免疫活动(SIAs)的频率和质量,传播程度显著降低,2004年的病例数比2003年几乎减
Since the 1988 World Health Assembly resolution on the global eradication of poliomyelitis, the number of endemic poliovaries dropped from 125 to 6 at the end of 2003. The ongoing efforts to block polio transmission in three endemic poliovirus countries in Asia (Afghanistan, India and Pakistan) have significantly increased the frequency and quality of Intensive Immunization Activities (SIAs), with a marked reduction in the level of spread, and in 2004 The number is almost less than in 2003