People who have been vaccinated against coronavirus, if they do become infected, have milder Covid-19 illness than unvaccinated people, a new US Centers for Disease Control and Prevention study shows.
원문출처 : https://www.cnn.com/2021/06/07/health/us-coronavirus-monday/index.html
원문출처 : https://www.cnn.com/2021/06/07/health/us-coronavirus-monday/index.html