同时，虽说年轻人是流感的易感人群，但一旦感染，最可能需要住院治疗或有生命危险的，主要还是幼儿、孕妇、病人和老人。

Also, although the flu infects younger people, the ones most likely to need hospitalization or die if they do get infected are the very young, pregnant women, the sick and the aged.

youdao

同时，虽说年轻人是流感的易感人群，但一旦感染，最可能需要住院治疗或有生命危险的，主要还是幼儿、孕妇、病人和老人。

Also, although the flu infects younger people, the ones most likely to need hospitalization or die if they do get infected are the very young, pregnant women, the sick and the aged.

youdao