Meh, behind a paywall. Would have like to read how the study was done. It's often been reported that around 80% of cases have mild to no symptoms and 20% have more severe symptoms. If it's 1 out of 1000 hospitalized, then there have to be a huge number of infected people to make the numbers work. I'm guessing there have been 10,000 hospitalized to date, then that would mean that based on this research there are approximately a million people in the US with or have recently had the virus. That's a large number.