Gram positive

• Generally poor

Gram negative

• Pseudomonas

• Enterbacteriaciae

• Moraxella

• Haemophilus

Anaerobic

• Prevotella

• Non-difficile Clostridia

• Peptostreptococci

Does not cover

• Stenotrophomonas

• Atypicals

• Most anaerobes

• Poor for gram positives including Staphylococci and Enterococci

• ESBL and inducible beta-lactamase producing organisms