Gram positive
Staphylococci including many MRSA
Listeria

Gram negative
Many Enterobacteriaceae
Stenotrophomonas
Shigella
Burkholderia
Brucella

Other
Pneumoncystis
Cyclospora
Nocardia

Does not cover
Pseudomonas
Anaerobes
Enterococci
Most Streptococci