Even as increasingly worrisome Covid-19 variants reach the United States, a senior adviser on the White House Covid-19 response team offered hope Thursday, saying they can be defeated with the right tools.
원문출처 : https://www.cnn.com/2021/01/29/health/us-coronavirus-friday/index.html
원문출처 : https://www.cnn.com/2021/01/29/health/us-coronavirus-friday/index.html