he antiviral activity of CQ/HCQ against SARS-CoV had an EC50 of 4.1 (±1.0) μM and 34(±5) μM, CC50 of >128 μM and CC50 > 100 and SI of >31 and SI>3, respectively [10,11]. SARS-CoV replication was inhibited by 99% at 16 μM CQ 3 days post-infecti