It looks like Remedsivir is giving better results than HCQ for the severe cases.
Here is how I would approach the prevention and treatment of COVID-19 if I was a doctor, which I actually am, just not in medicine
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1) For prevention: Zn (25mg/day), vitamin C, vitamin D3 supplements
2) For mild cases: HCQ + ZPAK + more Zn (150 mg/day)
3) For severe cases: Remedsivir