3.4 Treatment
Antiviral drugs were administered in 893 patients (97.0%). The breakdown of the drugs was peramivir in 529 patients, oseltamivir in 217, laninamivir in 87, baloxavir in 12, zanamivir in 4, oseltamivir + peramivir in 26, laninamivir + peramivir in 13, zanamivir + peramivir in 2, baloxavir + peramivir in 1, and oseltamivir + zanamivir in 1.
Antimicrobials were administered in 637 patients (68.9%). The most common antimicrobials used were ceftriaxone and sulbactam/ampicillin, consistent with the guidelines for CAP 4. Oxygen was required in 531 cases (57.5%), and mechanical ventilation including non-invasive positive pressure ventilation (NPPV) was performed in 84 cases (9.1%). There was no case in which extracorporeal membrane oxygenation (ECMO) was performed during the study period.