Japanese flu drug ‘clearly effective’ in treating coronavirus, says China | World news | The Guardian Apr 1, 2020 Shares in Fujifilm Toyama Chemical, which developed favipiravir, surged after praise by Chinese official Quelle: Japanese flu drug ‘clearly effective’ in treating coronavirus, says China | World news | The Guardian Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.