The number in NYC having Covid-19 antibodies is scientifically certainly greater than the official total infected in the entire USA. The whole counting exercise is just garbage right now. Lots of infections and deaths are not being counted.

About 20% of NYCers have been infected, at a cost of 16,000 lives(just using the official count which is scientifically known to be too low by at least 5000 if not more). Herd immunity is expected to kick in somewhere around 80%. That would cost another 48,000 lives at minimum.

Just the 16k deaths and associated severe illnesses have overwhelmed NYC's health care system, funeral homes, crematoriums and cemeteries. Try and imagine triple that number in addition.