白宮正規劃為5-11歲兒童接種COVID-19疫苗

<img src="https://static.rti.org.tw/assets/thumbnails/2021/06/18/ff5fea6ac296163f54e00a96fc6a2f6c.jpg" width="360" alt="白宮防疫協調官齊安茲(Jeff Zients)。...