Former Baltimore City Health Commissioner Dr. Leana Wen reacts to the results of a US-based clinical trial that the AstraZeneca Covid-19 vaccine showed 79% efficacy against symptomatic disease.
원문출처 : https://www.cnn.com/videos/health/2021/03/22/astrazeneca-efficacy-us-clinical-trial-leana-wen-newday-vpx.cnn
원문출처 : https://www.cnn.com/videos/health/2021/03/22/astrazeneca-efficacy-us-clinical-trial-leana-wen-newday-vpx.cnn