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In this section: Development Resources

Trimethoprim Sulfamethoxazole – Oral, Injection products

	Minimum Inhibitory Concentrations (mcg/mL)			Disk Diffusion (zone diameter in mm)
Pathogen	S	I	R	S	I	R
Enterobacterales^a	M100 standard is recognized
Haemophilus influenzae and parainfluenzae	M100 standard is recognized
Streptococcus pneumoniae	M100 standard is recognized

^aIncluding Salmonella spp. and Shigella spp.

S = Susceptible; I = Intermediate; R = Resistant

Exceptions to the recognized standard

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

Acinetobacter spp.

Burkholderia cepacia complex

Stenotrophomonas maltophilia

Other Non-Enterobacterales

Staphylococcus spp.

Neisseria meningitidis

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