Gram positive

• Unreliable against Staphylococci, Bacillus anthracis

Gram negative

• Pseudomonas

• Enterobacteriaceae

• Neisseria

• Haemophilus

• Moraxella

• Pasteurella

Anaerobes

• Not reliable

Other

• Atypicals including Legionella

Does not cover

• Most gram positives

• Streptococci

• Enterococci

• Stenotrophomonas

• Anaerobes