Despite hopes for relief this summer, the US is battling the first wave of the Covid-19 pandemic -- so much so that across the South and Southwest contact tracing is no longer possible, according to a health expert.
원문출처 : https://www.cnn.com/2020/07/07/health/us-coronavirus-tuesday/index.html
원문출처 : https://www.cnn.com/2020/07/07/health/us-coronavirus-tuesday/index.html