醫療人員吃緊 CDC對無症狀者發佈新指針

<img src="https://static.rti.org.tw/assets/thumbnails/2020/04/09/4ef46b39c5c2416d08b5569010de0cac.jpg" width="360" alt="美國CDC主任芮斐德(Robert Redfield,右)。...