Very broad spectrum, excludes Pseudomonas, Proteus, Providencia

Gram positive
Streptococci
Staphylococci including MRSA
Enterococci including VRE
Coagulase negative Staph

Gram negative
Drug resistant GNs including:
Acinetobacter
Carbapenemase producing Enterobacter
Serratia
Stenotrophomonas
Most Enterobacteriaceae

Anaerobes
B. fragilis
Prevotella
Peptostreptococci

Other
Atypicals
Chlamydophila and Mycoplasma