The CDC is expected to change guidance again, by recommending better masks . CNN's Dr. Sanjay Gupta reports.
원문출처 : https://www.cnn.com/videos/health/2022/01/11/dr-sanjay-gupta-cdc-new-mask-guidance-newday-vpx.cnn
원문출처 : https://www.cnn.com/videos/health/2022/01/11/dr-sanjay-gupta-cdc-new-mask-guidance-newday-vpx.cnn