This is an important study; @ChristianSulek brought it to my attention: sora.at/nc/news-presse… As far as I know, it's the only such sample that's been conducted in Europe or the US (please correct me if I'm wrong--I'd very much like to know.)
It suggests that the hope many of us have already been infected, without realizing it, is misplaced. A random sample (using Roche’s cobas SARS-CoV-2 test, which is *not* an antibody test) found only 0.33% were infected.
It's possible that many, many more had been infected in the past and cleared the virus already, but given the date--April 10--this seems highly unlikely. So this suggests that CFR is, indeed, as bad as it looks.
