- Patients who were diagnosed as mild or moderate in severity by the classification of
pneumonia "Clinical evaluation methods for new antimicrobial agents to treat
respiratory infections: Report of the Committee for the Respiratory System, Japan
Society of Chemotherapy (established in 2000)".
- Severe underlying disease; patients in which drug clinical evaluation is difficult
because of confounding diseases. ("Severe" assessed by the Severity of underlying
diseases and complications of "Clinical evaluation methods for new antimicrobial
agents to treat respiratory infections (draft)" by the Japan Society of Chemotherapy