Factors Influencing the Effectiveness of Oseltamivir and Amantadine for the Treatment of Influenza: A Multicenter Study from Japan of the 2002--2003 Influenza Season

Abstract
Background. To evaluate the effectiveness of oseltamivir and amantadine for the treatment of influenza with respect to various clinical factors, a prospective multicenter study of the influenza season of 2002–2003 was done with 2163 patients whose condition was diagnosed by an antigen-detection test kit.