As researchers around the world race to see if new coronavirus variants will pose a problem for the vaccines, a second study in two days says a variant from South Africa could possibly do just that.
원문출처 : https://www.cnn.com/2021/01/21/health/coronavirus-variant-problem-vaccines/index.html
원문출처 : https://www.cnn.com/2021/01/21/health/coronavirus-variant-problem-vaccines/index.html