• Favipiravir Observational Study Interim Report 4（2021.11.10）NEW
• Favipiravir Observational Study Interim Report 3（2021.4.19）
• COVID-19 Ciclesonide Observational Study in Japan：Second Report（2021.4.1）
• COVID-19 Nafamostat Observational Study in Japan: Preliminary Report（2020.12.15）
• COVID-19 Ciclesonide Observational Study in Japan: Preliminary Report（2020.11.30）
• Favipiravir Observational Study Interim Report 2（2020.9.29）
• Preliminary Report of the Favipiravir Observational Study in Japan（2020.5.26）
• Severe Cases of COVID-19 Pneumonia: What Can We Do for Saving Lives ?（2020.4.22）
• A case of COVID-19 pneumonia complicated with rhinitis / sinusitis who was required 41 days from onset to negative SARS-CoV-2 PCR test（2020.4.15）
• Therapeutic potential of ciclesonide inahalation for COVID-19 pneumonia: Report of three cases
  Keisuke Iwabuchi, Koichiro Yoshie, Yuichi Kurakami, Kota Takahashi, Yoshio Kato,Tsuneo Morishima
  （This case report was published online at Journal of Infection and Chemotherapy）
• A case of administration of hydroxychloroquine in a hemodialysis patient with COVID-19（2020.4.7）
• COVID-19 pneumonia with rapid symptom improvement and conversion to negative result on PCR after administration of favipiravir （Avigan^®）（2020.4.6）
• Risk factors for the severe COVID-19 pneumonia（2020.3.31）
• Two Cases of COVID-19 Pneumonia Including Use of Favipiravir（2020.3.31）
• Point to suspect COVID-19 infection considered from 6 cases of COVID-19 pneumonia that developed in the community（2020.3.31）
• A case of COVID-19 pneumonia that did not worsen and was relieved by early administration of favipiravir and ciclesonide（2020.3.31）
• Two cases of asymptomatic new type coronavirus （COVID-19） pneumonia Including one case with organizing pneumonia pattern（2020.3.30）
• Clinical course of 11 cases of SARS-CoV-2 infection occurred in a large cruise ship（2020.3.30）
• A Case of Interstitial Pneumonia under Immunosuppresion, Complicated with Lower Respiratory Tract COVID-19 PCR Positivity（2020.3.23）
• Report of 15 cases of Covid-19 including 3 cases requiring mechanical ventilation（2020.3.19）