As the rate of Covid-19 vaccinations climbed and new infection numbers plummeted in spring, many Americans thought they were in for a carefree summer.
원문출처 : https://www.cnn.com/2021/08/08/us/five-figures-us-summer-covid-surge/index.html
원문출처 : https://www.cnn.com/2021/08/08/us/five-figures-us-summer-covid-surge/index.html