The issue with the Henry Ford study was dexamethasone when it is used reduces mortality rates according to one study. People who were taking HCQ were given dexamethasone at a much higher rate.
There were other issues.
One of the studies examined use with zinc and it wasn't found to help. Even without zinc if it was a great cure there would be some effect.
If it is shown to work before exposure then it will be good and I promise I will not bag it.
