Omicron, the newest coronavirus variant, is also the quickest to be labeled a "variant of concern" by the World Health Organization because of its seemingly fast spread in South Africa and its many troubling mutations.
원문출처 : https://www.cnn.com/2021/11/29/health/coronavirus-variants-what-we-know-november/index.html
원문출처 : https://www.cnn.com/2021/11/29/health/coronavirus-variants-what-we-know-november/index.html