Recognized Interpretive Criteria

 

Minimum Inhibitory Concentrations
(mcg/mL)

Disk Diffusion
(zone diameter in mm)

Pathogen

S

I

R

S

I

R

Enterobacterales

-

-

-

M100 standard is recognized

Brucella spp.

M45 standard is recognized

-

-

-

Francisella tularensis

M45 standard is recognized

-

-

-

Yersinia pestis

M45 standard is recognized

-

-

-

S = Susceptible; I = Intermediate; R = Resistant