New study in the Netherlands with about 3 percent showing COVID antibodies. If representative, means 1) about 15 cases for every confirmed case and 2) the country is very far from herd immunity. https://twitter.com/2019nCoVwatcher/status/1250703823125053440

I would really like to know which serology test they used if anyone knows. Also I deleted an earlier RT of this thread because I made it sound like they tested the whole country (which would be impossible at this stage, but better not to sow confusion).

Big question (besides which test they use) is how representative this is. Specifically, would you expect these blood donors to have higher or lower exposure than the average person? I could see it argued either way.