Not that anyone on DU who is not a lurking right winger needs to be convinced
of the power of proper mask wearing (all parts of nose and mouth covered, nose wire used to conform top of mask to cheeks) and social distancing. But below is an actual (albeit) unintentional case study. The person that made this boo-boo is a smart man, Peter Diamandis (Engineering degree, Medical degree and I think one other technical degree, and the Founder of the XPrize that awarded $10 million in 2004 to a person that developed a scheme for private manned space flights).
Any way. The guy was going to put on a big tech convention that is held each year, looking at futuristic tech stuff. Except this year he initially made it remote, until people bugged him about attending in person. So he gave in to the people wanting to attend in person. Being a really smart person, looks like he figured out a way to keep everyone safe. He had people take PCR COVID19 tests repeatedly before they arrived and they were tested during and after the conference. As the old saying goes, “regardless of how smart you are or think you are, you don’t know what you don’t know”. Well his idea, bad ideal. Interestingly one group that was there the whole time had NO ONE set sick from COVID19, by now, you likely have guessed what the group did.
Some details below: I posted a key excerpt in case the article is paid view to you.
There were four groups:
Organization members: 12 of 30 got sick
Faculty: 4 of 9 got sick
Staff: 5 of 10 got sick
Video production: 0 of 35 got sick, all wore masks at all times and social distanced.
https://apple.news/ATjR8SkJuT_mKQXKU3pE6FQ