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如果一种实验性疫苗对人类的作用如同对小鼠一样有效,那么住院期间的老年人和体弱者不久就可以解除对一种杀伤性细菌感染的过度担忧。
If an experimental vaccine works just as effectively in humans as it does in mice, the elderly and infirm during hospitalization will soon be relieved of over-concern for a killer bacterial infection.