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- 2015-8-13
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Until now, only injectable vaccines against influenza have been available. Parents are reluctant to subject children to the pain of injections, but adults, who are at risk of serious complications from influenza, are commonly vaccinated. A new influenza vaccine, administered painlessly in a nasal spray, is effective for children. However, since children seldom develop serious complications from influenza, no significant public health benefit would result from widespread vaccination of children using the nasal spray.
想问下这个题目是属于哪个类型的阿
搞不明白为什么要选D. Adults do not contract influenza primarily from children who have influenza. |
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