For invasive infections, prefer Ceftriaxone as empiric therapy until susceptibilities provided - then use ampicillin
Second and third generation cephalosporins, amoxicillin-clavulanate, clarithromycin/azithromycin
Variable susceptibility to amoxicillin/ampicillin (via beta-lactamase), TMP-SMX
Resistant to first generation cephalosporins.
