Probably never will as it changes all the time.

Which kind of emphasizes the need for our population to become more healthy with a more robust immune system. Which is doable.

From the summary:"at least a third of infections determined by serology were asymptomatic."

Protect the unhealthy and at risk. Let them self quarantine. Let the rest go about their lives.

Look at the difference between lock down and no lock down data. https://www.youtube.com/watch?v=cSKjcltDkng

John