Do you have a sore throat, a runny nose and muscle aches? It could be a common cold, a case of the flu -- or Covid-19.
원문출처 : https://www.cnn.com/2021/12/28/health/is-it-cold-flu-or-covid-wellness/index.html
원문출처 : https://www.cnn.com/2021/12/28/health/is-it-cold-flu-or-covid-wellness/index.html