The countries that used this drug with their regime of treatments, statistically correlated with about an order of magnitude lower rates than countries who rejected it.
54 studies with 100% results if used to reduce risks or if infected and used early all prevented death. Still not a gold standard test but certainly favourable to outcomes and low cost.The studies that failed appear to be bad guesses and failed, either being used too late or too high a dose or used CQ instead of HCQ.
Dr. Zalenski reported it had to be started within 7 days of infection or earlier.