• Household spread of Covid-19 is common and quick, a new CDC study finds
원문출처 : https://www.cnn.com/2020/10/31/europe/uk-lockdown-coronavirus-europe-intl/index.html
원문출처 : https://www.cnn.com/2020/10/31/europe/uk-lockdown-coronavirus-europe-intl/index.html