"The researchers found that the percentage of infections was indeed
vastly larger than the roughly 1,000 known positive cases in the county
at the time of the study. The preliminary results—the research will now
undergo peer review—show that between 2.5% and 4.2% of county residents
are estimated to have antibodies against the virus. That translates
into 48,000 to 81,000 infections, 50 to 85 times as high as the number
of known cases.â€