Students returning to school in the fall will likely teach the nation even more about the unknowns of Covid-19, the United States' top infectious disease doctor said.
원문출처 : https://www.cnn.com/2020/07/29/health/us-coronavirus-wednesday/index.html
원문출처 : https://www.cnn.com/2020/07/29/health/us-coronavirus-wednesday/index.html