英研究：接種2劑疫苗可顯著預防Delta病毒住院率

未署名2021/6/15 12:10

<img src="https://static.rti.org.tw/assets/thumbnails/2021/04/17/cdf30057ad837cd51016efcbf821425f.jpg" width="360" alt="Covid-19疫苗。...