C.D.C warns that US "probably recognized about 10 percent of the outbreak"

On Thursday, C.D.C. director Dr Robert Redfield warned that the numbers of Covid-19 infections are most likely to be 10 times higher than the official numbers of 2.3 million, basing these assumptions on recent antibody test results.
"Now that serology tests are available, which test for antibodies, the estimates we have right now show about 10 times more people have antibodies in the jurisdictions tested than had documented infections," so Redfield.