A new subvariant of Omicron is spreading rapidly in some parts of the world. This spinoff from the original Omicron variant, called BA.2, has been found in at least 49 countries, including the United States. In some countries, like Denmark, BA.2 has already surpassed the original Omicron (BA.1) as the dominant variant.


원문출처 : https://www.cnn.com/2022/02/03/health/stealth-omicron-variant-wen-wellness/index.html