After a huge vaccination campaign aimed at protecting at-risk groups, these hospitals, with 93 percent of the at-risk groups vaccinated, had not hospitalized a single patient for the pandemic H1N1 virus.
在进行了针对高风险人群的 大型接种运动之后 那些有93%的高风险群接种率的医院 再没接到过一例 H1N1 流感患者