CNN's Erica Hill reports on confusion around the amount of second doses of the coronavirus vaccine from Pfizer as the CDC warns the new Covid-19 variants could accelerate the spread of Covid-19 in the US.
원문출처 : https://www.cnn.com/videos/health/2021/01/18/coronavirus-wrap-vaccine-doses-hill-dnt-nr-vpx.cnn
원문출처 : https://www.cnn.com/videos/health/2021/01/18/coronavirus-wrap-vaccine-doses-hill-dnt-nr-vpx.cnn