Guess you missed that WHO/Taiwan thread eh?
The OP is correct in that logically if everyone wears masks, then logically the infected would spread it less. The problem is humans are not logical and screw things up all the time, and this is why the expert medical community doesn't recommend masks foir public use. Outside of a laboratory testing which does show some results with masks, every study that has looked at the community use of masks has seen no benefit OR an actual increase in infections.
Not from the mask usage, but from humans making constant mistakes in relation to mask use. Masks must be discarded after about 20 minutes or they start to increase the chance of infection due to moisture saturation. After 20 minutes, that moisture will start escaping from the mask because its saturated. And even if you do discard it in time, improper touching and disposal also increase infection chances. The final reason and worse offender is the false sense of security and people returning to normal routines, which destroys social distancing protocols which BY FAR are the most effective method.
As for, Asian countries, if you look at the main factors for their linear increase, it was swift, strong social distancing and testing regimes. Places that actually started to reduce those strict guidlines, like Hong Kong, have now shown a spike again in cases since the Virus is still active worldwide. Mask use be damned.
Tokyo governor warns of measures to prevent ‘explosion’ of cases as Hong Kong health expert calls for curfew to handle cases arriving from overseas
www.theguardian.com