All these problems of wearing masks did not happen in China. Wearing masks inside closed rooms like shops, offices makes the differences. We did not know that in the beginning, but we know now. The keyword is "Aerosol". And like James_S explained above: A well made, reusable mask has two layers of cotton and it is like socks or trousers. You need like 10 or more to have a fresh one each day and you wash them with your clothes and pass them hot. That's about it.
Of course, if you prefer a complete lockdown over wearing masks, you can stay at home - as long as money lasts.
Regards, Dieter
Yes, that's true. I support a law enforcing masks in enclosed public spaces such as shops, but would disagree with one mandating them outside, unless it's in a crowd. I wouldn't want to have to wear a mask cycling to work, because there's no risk of me passing it on to anyone. I often see no pedestrians or other cyclists on my journey to work, so all a mask would do is make me more hot and sweaty and harder to breath, once it becomes damp.
Even if you know for sure that you had it, acting as if you are immune is a dangerous assumption in the case of CV19. That's not yet understood or proven. There are some data points that suggest that either any immunity can be short-lived or that a prior infection can reactivate.
I'd still feel better knowing I'd already had it, that would suggest that it is not likely to be serious for me if it happens again. Of course nothing is guaranteed. Apparently the tests are not super accurate though, a false positive in the antibody test would be worse than not knowing.
Unfortunately I didn't get tested and it's too long ago for an antibody test, so I'll never know, unless a quick memory T cell test becomes available. It's possible the cough was the common cold and my chilblains were the result of cycling in cold, wet weather and sitting still in a cool room, for hours on end. Lastly, even if I had it, it's not 100% proven I won't get it again, although it'd would be highly unlikely. Given this level of uncertainty, it would be foolish for me to presume I'm immune and ignore social distancing regulations.
At the moment, the majority of evidence seems to suggest that if someone has had it, they will have some level of immunity so are unlikely to get it again and if they do, the chances are it won't be as bad the next time, as is the case for most viral infections. Now that might not be true. It could be like polio which can come back later, but no other coronaviruses do that, so it seems unlikely. Either way, we need to err on the side of caution.
It's interesting there's less interest in the idea of immunity certificates, than there was a few weeks ago. I believe this is more to do with the fact they would encourage people in low risk groups to deliberately get infected and declared immune, so they'll have greater employment opportunities, than those who haven't had it. Unfortunately there's evidence to suggest the level of exposure also determines the severity of illness, so people who deliberately infect themselves by engaging in highly risky behaviours such as deliberately coughing on one another, kissing and other sexual activity, will become more ill, than those who catch it by picking it up off a supermarket trolley.