f the Polish health minister in February that wearing a mask is useles
Well back in February he may have been under the influence of the Chinese puppet WHO... since then (thanks to Chinese paranoia and secrecy) very little was known and the rest of the world had to figure out things in a hurry without any help from the epicenter or the international organization that's supposed to help in situations like this.
In such a situation knowledge will change as more becomes known. Deciding something has to be the case because of something said two months ago is not useful.
Early on it seemed that respirators would be needed but as it's turned out they're mostly not needed and may in fact do more harm than good.
Early on it seemed maybe it was super-contagious (erring on the side of caution is always a good idea in such a situation) but now it seems to not be especially contagious except in closed environments.
There's a lot that's not yet known and it will be necessary to modify policy as more does become known.
At present the rate of infection is clearly slowing down in Poland with numbers being pushed up a bit by care homes - one researcher found it doesn't really spread in fresh air (how much is this made worse by traditional Polish paranoia about przeciągi ?)
Where I am most people are wearing masks though some kind of pull them down past the nose (dumb) and some pull them down so they can feed their oral fixation by smoking but there's a lot more compliance than not.
they haven't announced a continuation of the school lockdown so I'm working under the assumption that schools will reopen next week.
The plain fact is that if the economy doesn't get back into gear (and soon) then things will get very bad very quickly (and economically it will make a depression seem like a walk in the park).
If the Polish government had any foresight it would shore up the medical system by pumping money and resources into it and work on protocols and equipment for a possible second wave after the summer... but it's probably not going to do that because PiS is all about patronage and doctors and nurses aren't an important voting bloc....