Post #632: Hard evidence of a high prevalence of asymptomatic cases.

Source: Universal Screening for SARS-CoV-2 in Women Admitted for Delivery, NEJM April 13, 2020 DOI: 10.1056/NEJMc2009316, by Desmond Sutton, M.D., Karin Fuchs, M.D., M.H.A., Mary D’Alton, M.D., Dena Goffman, M.D.
Columbia University Irving Medical Center, New York, NY

Every thinking person needs to glance at this one-page piece of research.

https://www.nejm.org/doi/full/10.1056/NEJMc2009316?query=featured_home

This New York City hospital decided to test every obstetrics case that came into the hospital.   The pie above is all cases.  The blue segment is those who were COVID-19-free.  The gray segment is this who had it, and showed symptoms. The orange segment is people who had COVID-19, but weren’t showing symptoms.  At that time, in that city, at that hospital, the overwhelming majority of women where were carrying COVID-19 were asymptomatic when first tested by that hospital

The only remaining piece of the puzzle is how infectious they are before they begin showing symptoms.