Gram positive

• None as monotherapy

Gram negative

• Susceptible Enterobacteriaceae including ESBL producers

• Pseudomonas aeurginosa

• M. catarrhalis

• H. influenzae

Anaerobic

• None

Other

• Synergistic activity against Staphylococci and Enterococci

• Some Mycobacteria

Does not cover

• Most gram positives

• Anaerobes

• Atypicals