As the highly contagious Omicron coronavirus variant continues to spread, some experts say it's past time to reconsider your face mask options -- especially if you're still wearing the cloth variety.
원문출처 : https://www.cnn.com/2021/12/24/health/cloth-mask-omicron-variant-wellness/index.html
원문출처 : https://www.cnn.com/2021/12/24/health/cloth-mask-omicron-variant-wellness/index.html