it's amazing that people spreading fake news and disinformation receive merits from a merit source... this forum section looks like a madhouse. Nowadays every kind of shit is equated with scientific knowledge and we will see the results in the short term.
let's draw then and I hope people can get it:
https://i.postimg.cc/B6cHVStN/EX5-Jxl8-Wo-AAg-E9-U.jpgI'm not saying that masks is completely useless, but numbers in this image looks so random. I haven't heard about any scientific research which would prove that these numbers is right. There is many factors which may change these numbers into one or other side.
I think that in crowded places like shops or public transport, but I think it's not needed in the streets at all.
And, WHO still don't recommend to wear it for helthy people, here is quote from their website:
If you are healthy, you only need to wear a mask if you are taking care of a person with COVID-19.
Wear a mask if you are coughing or sneezing