Table 2.
a Isolates with an MIC result as a range have been rounded up.
b Lowest concentration of antimicrobial agent capable of inhibiting the growth of 50% of isolates.
c Lowest concentration of antimicrobial agent capable of inhibiting the growth of 90% of isolates.
d Percentage of resistance.
e MICs to the right of the solid vertical lines indicate breakpoints for resistance; MICs to the left of the dotted vertical lines indicate breakpoints for susceptibility.
f Only 43 H. somni could be revived for tulathromycin MIC testing.