There's good news about coronavirus vaccines. At least three of the experimental vaccines show remarkable efficacy, at least according to information released by the makers in news releases.
원문출처 : https://www.cnn.com/2020/11/24/health/covid-vaccines-design-explained/index.html
원문출처 : https://www.cnn.com/2020/11/24/health/covid-vaccines-design-explained/index.html