Infected despite the fact they had no specific contact with people with the virus, so it must have been spreading airborne. but really if you look at the time line, despite the evidence accumulating, it wasn't until the end of last year, december of 2021, when the w.h.o. finally said, yes, this does seem to spread airborne in all sorts of different settings. that could have made a huge difference how this was approached, in terms of the recommending of masks and specifically n95 or kn95 masks. the idea that this was a worldwide problem, there were obvious countries more affected than others bu...