Alternate measurements of NYC confirm that ~1/4 of people in New York have had it.
https://www.msn.com/en-us/news/us/c-d-c-data-shows-u-s-coronavirus-infections-much-higher-than-reported/ar-BB170RE0?ocid=spartan-ntp-feeds
https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/commercial-lab-surveys.html
https://jamanetwork.com/journals/jama/fullarticle/2768835
https://www.msn.com/en-us/news/us/c-d-c-data-shows-u-s-coronavirus-infections-much-higher-than-reported/ar-BB170RE0?ocid=spartan-ntp-feeds
https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/commercial-lab-surveys.html
https://jamanetwork.com/journals/jama/fullarticle/2768835
Mike Shaw - Class of '03