As experts race to mitigate the spread of Covid-19 by encouraging vaccinations and mask wearing, hospital systems in a handful of states are now straining to keep up with the surge.
원문출처 : https://www.cnn.com/2021/08/13/health/us-coronavirus-friday/index.html
원문출처 : https://www.cnn.com/2021/08/13/health/us-coronavirus-friday/index.html