See Community Acquired Pneumonia guideline
See Influenza guideline
Ceftriaxone 1 g IV q24h
AND
Azithromycin 500 mg IV q24h
OR
Levofloxacin 750 mg IV, then dose for renal impairment
See Hospital Acquired Pneumonia guideline
Piperacillin-tazobactam 4.5 g IV x 1, then dose for renal impairment
ADD Vancomycin 25 mg/kg IV, then see vancomycin nomogram