Therapeutic, AFAIK, would mean something that relieves the symptoms and induces healing. For example, there's not a vaccine for pneumonia but if you get pneumonia, there's a treatment for it, so you don't have to worry too much about it.
Best solution to current situation. get Wuhan, take a pill, no biggie. No need to shut shit down. No need to get a vaccine if you don't want to.
This will blow up all dem/DS election plans, so it has to be iron-clad. Also blows to shit Biden's 3-month mask, January economic lock down plan.
Night before pub convention is a good release time. During the convention it would be played off as only a political move.