Here we are two-and-a -half years and many variants into the coronavirus pandemic, and the virus continues to surprise.
원문출처 : https://www.cnn.com/2022/07/20/opinions/covid-ba-5-vaccines-sepkowitz/index.html
원문출처 : https://www.cnn.com/2022/07/20/opinions/covid-ba-5-vaccines-sepkowitz/index.html