COVID Confusion

It is getting worse. It is going away.
Lock down, open up, lock down.
You don't need to wear a mask. You must wear a mask.
Test those with symptoms. Test everyone. Don't bother testing.
Use antibody tests. Antibody tests don't work.
About 5-8% of people are asymptomatic. Over half the population has been asymptomatic.
People develop immunity after infection. People can be infected multiple times.
The virus came from bats. It was engineered in a lab.
And on and on. This is like a pandemic managed by the Keystone Kops...

It's been over half a year and basic research still hasn't been done. Why hasn't a randomized clinical trial looking at infection rate been done in every state or at least region? Perhaps because understanding the extent of this disease might eat into the profits?
Let's see if we can parse out some things we do know, look at strategies which might prevent infection, and if you are infected what treatments might effective.