TOKYO - A Japanese medical university said Friday a clinical study of the antiviral drug Avigan has failed to demonstrate a clear efficacy in treating coronavirus patients at an early stage of the disease.Fujita Health University said that the difference seen between the patients who took the drug immediately and those who took it later was not statistically relevant in assessing the effectiveness of the drug, developed by a subsidiary of Fujifilm Holdings Corp."There has been a tendency to bring down fever or eradicate the virus" in those administered with the drug, Yohei Doi, a professor…READ FULL ARTICLE