WWLP reports NIH recent research findings that Covid 19 underdiagnosed; for every 1 diagnosed case, there were approx five undiagnosed cases. Additionally, Massachusetts earliest case needs to be moved back to Jan 6 from Feb, with cases even potentially before that, as NIH previously determines Coronavirus was in the US as far back as Dec 2019. Other states as well. COPYRIGHT WWLP/EDUCATIONAL NON PROFIT use ONLY/FAIR USE LICENSE only