U.S. CDC says most COVID-19 infections spread by people without sympto… stocking 0 42 2020.11.23 09:28 https://youtu.be/4zNQ2q-l6UE + 1 美 CDC "코로나19 70%는 무증상 상태 전파" The U.S. Centers for Disease Control and Prevention says most COVID-19 infections are spread by people who do ...