Yes, this was a state test: https://www.nytimes.com/2020/04/23/nyregion/coronavirus-antibodies-test-ny.html https://www.nytimes.com/2020/04/23/nyregion/coronav

Yes, this was a state test: https://www.nytimes.com/2020/04/23/nyregion/coronavirus-antibodies-test-ny.html https://www.nytimes.com/2020/04/23/nyregion/coronavirus-anti... “ In New York City, about 21 percent tested positive for coronavirus antibodies during the state survey. The rate was about 17 percent on Long Island, nearly 12 percent in Westchester and Rockland Counties and less than 4 percent in the rest of the state. “State researchers sampled blood from the approximately 3,000 people they had tested over two days, including about 1,300 in New York City, at grocery and big-box stores. The results were sent to the state’s Wadsworth facility in Albany, a respected public health lab. This was characterized as Covid spreading “far more widely” than previously believed in NY. So I agree national rate probably higher than people think. Of course the 1/5 figure would not be expected outside the hotspot of NYC. Probably a national high in fact. But 1/10 as a long term national number seems plausible.