世界卫生组织西太平洋区消灭脊髓灰质炎证实委员会29日在京宣布，中国在出色应对2011年新疆地区疫情后，成功保持了“无脊灰状态”。脊髓灰质炎俗称小儿麻痹症，是一种由病毒引起的极具感染性的疾病，主要影响年幼的儿童。许多受感染的人没有症状，但在少数情况下，该病可造成永久瘫痪。脊髓灰质炎只能通过免疫接种预防。2012年11月26日至29日，世界卫生组织西太平洋区消灭脊髓灰质炎证实委员会在北京召开第18次会议。这是该委员会首次在中国开会。这是11月29日拍摄的会议会场。新华社发     The world health organization western Pacific region polio confirmed committee 29 announced in Beijing,China in great deal with 2011 outbreaks in the xinjiang region,Keep the success"No JiHui state".Polio commonly known as polio,Is a kind of caused by viruses highly infectious disease,The main influence young children.Many people do not have symptoms of infection,But in a few cases,The disease can cause permanent paralysis.Polio can only through the immunization to prevent.On November 26, 2012 to 29,The world health organization western Pacific region polio confirmed committee was held in Beijing the 18th conference.This is the committee meeting for the first time in China.This is November 29, shooting of the meeting venue.The xinhua news agency hair