Antiviral therapy is only of interest during the early and intermediate viral phase when the virus is present and replicates, and is of no use during the late inflammatory phase (cytokine storm). Most therapeutic trials, unfortunately, have been carried out in hospitalized patients, which is to say probably often too late, because the patients are in the early inflammatory phase.
Reductions in covid-19 deaths and infections may be possible by using ivermectin. Employing ivermectin early on may reduce the number of people progressing to severe disease. The apparent safety and low cost suggest that ivermectin could have an impact on the SARS-CoV-2 pandemic globally.