Actually, all the countries worldwide are discussing policies about face masks. Masks were, up to now, mainly used by surgeons, and now, all medical workers are working with masks. In Switzerland, my country, face masks are now mandatory in public transportation. Some countries are right now discussing making them mandatory in public spaces.
At the same time, I'm discovering the whole "Unmasking the surgeons" discussion, which is a movement in medicine which try to evaluate the effectiveness of wearing face masks in the theatre. From what I understand, the evidence about reducing nosocomial infections is old and not that conclusive.
At the same time, a lot of people are spreading the idea that masks can actually be detrimental (bactery can multiply on the fabric, you have less oxygen, you are less careful with a mask, etc.), which seems kinda clumsy to me.
Coming from these, I hear a lot of people arguing about face masks as a response to COVID-19, and I don't know what to think about it and how to argument it, so here are the questions :
- Is this "Unmasking the surgeons" a serious thing really discuted ?
- How is the scientific consensus about the fact wearing masks can reduce the spread of viral respiratory infections in some case ? In which case ? Are those evidences good quality ?
- I believe that the people at WHO are issuing this policies, based on the fact that it is very probable that the outcome will be better. How are they arguing this ?