港大研究：打兩針BNT或科興 不足以抵抗Omicron

<img src="https://static.rti.org.tw/assets/thumbnails/2021/11/30/838254761bc30af998482383eca1ea06.jpg" width="360" alt="COVID-19變異病毒株Omicron來勢洶洶，讓全球再度...