Doi et al., Antimicrobial Agents and Chemotherapy,
doi:10.1128/AAC.01897-20 (Peer Reviewed)
A Prospective, Randomized, Open-Label Trial of Early versus Late Favipiravir Therapy in Hospitalized Patients with COVID-19
Small RCT comparing late and very late (7 and 14 days from fever onset) favipiravir. Viral clearance was non-statistically significantly improved with relatively early treatment. There was a reduction in time to defervescence, and a significant improvement in fever was observed the day after starting therapy. There was no progression or mortality. While limited by the small sample size, authors conclude that the results suggest antiviral activity of favipiravir in this patient population. There was no control group.
Doi et al., 11/17/2020, Randomized Controlled Trial, peer-reviewed, 45 authors.