Three large new studies from the US Centers for Disease Control and Prevention highlight the importance of getting a booster shot to provide the best protection against the Omicron coronavirus variant.
원문출처 : https://www.cnn.com/2022/01/21/health/cdc-omicron-booster-studies/index.html
원문출처 : https://www.cnn.com/2022/01/21/health/cdc-omicron-booster-studies/index.html