Gram positive

• Very poor.

Gram negative

• Pseudomonas

• Enterbacteriaciae

• Moraxella

• Haemophilus

Does not cover

• Stenotrophomonas

• Atypicals

• Most anaerobes

• Poor for gram positives including Staphylococci and Enterococci

• ESBL and inducible beta-lactamase producing organisms