Comments by "F Liu" (@F_Liu) on "Coronavirus: How bad is the situation in Europe? - BBC News" video.
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@peaceunion5316 The main type of transmission is by droplets yes, but the droplets can form an aerosolized mists and hang in the air for as long as 2 hours in certain weather/pressure/humidity conditions, many infected cases in China happened this way, especially in enclosed air condition circulated spaces like lifts, buses, tubes and indoor places, where you can breath in the mists contains the virus, the more virus you breath in the more chances you will catch it. And imagine how many people sitting in that bus say in the 2 hours or even 30 secs of time, that is why you need to wear masks to reduce the chances even if by a little. I am Chinese, I know this from Chinese medical experts, that is why all Chinese people are required to wear masks when they go out of their homes, but believe whatever you want to believe, it is your life you do whatever you want. BTW, if masks is of no use then why doctors wear them, it is a no brainier!
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