世卫开始使用新的疫苗来预防小儿麻痹症
Hints:
Rod Curtis
Geneva
bivalent vaccine
trivalent vaccine
type I
type III
polio
Carol Pandak
Afghanistan
Nigeria
Pakistan
Rod Curtis at the World Health Organization in Geneva says the new bivalent vaccine solves the problem. "The beauty of the bivalent vaccine is that it's able to attack both types of wild polio virus in one dose." Carol Pandak says tests found the new vaccine to be 30% more effective than the triva…
日内瓦世卫组织的罗德•科第斯表示这种新的二价疫苗解决了这个问题。 “这种疫苗的优点在于它可以一剂量对抗两种类型的脊髓灰质炎。” 卡罗尔•潘达克表示测试结果显示新疫苗比三价疫苗的效果要好30%。 去年阿富汗新增30多起脊髓灰质炎病例，其中一半感染了I型，其余的为III型。罗德•科第斯说这就表明了新疫苗同时以两类病…