[Global Insight] - Airborne transmission of COVID-19: How safe are we … stocking 0 105 2020.10.30 09:13 https://youtu.be/sYsc8EjMCjE + 5 Airborne transmission of COVID-19: How safe are we indoors? - 화이자 “코로나 백신 마지막 단계…효능 조심스럽게 낙관” 2020-10-30, 08:00 (KST) ...