Effectiveness of Favipiravir on Nonsevere, Early-Stage COVID-19 in Japan: A Large Observational Study Using the COVID-19 Registry Japan.
Shinya TsuzukiKayoko HayakawaYohei DoiTomohiro ShinozakiYukari UemuraNobuaki MatsunagaMari TeradaSetsuko SuzukiYusuke AsaiGen YamadaSho SaitoTaro ShibataMasashi KondoKazuo IzumiMasayuki HojoTetsuya MizoueKazuhisa YokotaFukumi Nakamura-UchiyamaFumitake SaitoWataru SugiuraNorio OhmagariPublished in: Infectious diseases and therapy (2022)
In this large cohort from a COVID-19 registry, favipiravir was not associated with a positive effect on the clinical outcome on patients with nonsevere, early-stage COVID-19, suggesting that it is not an essential drug for COVID-19 treatment.