Streptococcus pneumoniae
penicillin-susceptible: penicillin G or V, amoxicillin
penicillin-intermediate resistance: penicillin G IV, ceftriaxone or cefotaxime
Penicillin-high level resistance (menigitis): vancomycin and ceftriaxone or cefoxime plus or minus rifampin
Penicillin-high level resistance (other infections): vancomycin and ceftriaxone or cefotaxime: levofloxacin, gemifloxacin, or moxifloxacin