The New York Times reports:
About 21 percent of people in New York City who were tested for coronavirus antibodies this week tested positive, Gov. Andrew M. Cuomo said on Thursday. The surprising results come from a state program that randomly tested 3,000 supermarket customers across New York State.
Nearly 14 percent of those tests came back positive, Mr. Cuomo said. If those numbers translate to the true incidence of coronavirus, they would mean that more than 1.7 million people in New York City, and more than 2.6 million people statewide, have already been infected.
These numbers are far greater than the 250,000 confirmed cases of the virus itself that the state has recorded. They would also mean that the fatality rate from the virus is relatively low — about 0.5 percent, Mr. Cuomo said.