Ceftazidime – Injection products

Recognized Interpretive Criteria

Exceptions to the recognized standard of CLSI M100

	Minimum Inhibitory Concentrations (mcg/mL)			Disk Diffusion (zone diameter in mm)
Pathogen	S	I	R	S	I	R
Enterobacterales	M100 standard is recognized
Pseudomonas aeruginosa ^a	≤ 8	-	≥ 16	≥ 18	-	≤ 17
Acinetobacter spp.	M100 standard is recognized			-	-	-
Burkholderia cepacia complex	M100 standard is recognized			-	-	-
Stenotrophomonas maltophilia	M100 standard is recognized			-	-	-
Haemophilus influenzae and parainfluenzae	M100 standard is recognized

S = Susceptible; I = Intermediate; R = Resistant
^a For P. aeruginosa, susceptibility interpretive criteria are based on a dose of 2 grams IV every 8 hours in patients with normal renal function

For the bacteria listed below, susceptibility test interpretive criteria are not recognized at this time:

Acinetobacter spp. disk diffusion interpretive criteria (Interpretive criteria for MIC are recognized.)

Burkholderia cepacia complex disk diffusion interpretive criteria (Interpretive criteria for MIC are recognized.)

Other Non-Enterobacterales