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Table 1 Ranges of MICs, MIC50 and MIC90 and antibiotic resistance in 329 B. melitensis isolates

From: Antimicrobial susceptibility of Brucella melitensis in Kazakhstan

 

MICs range (μg/mL)

Susceptibilitya and thresholds (μg/mL)

MIC50 (μg/mL)

MIC90 (μg/mL)

Classification of isolates, No1 (%)a

S

I

R

Value

No1

Value

No1

S

I

R

rifampicin

0.38-16

≤1

2

≥4

1.5

170

8

326

123 (37.4)

72 (21.9)

87 (26.4)

rentamicin

0.5-8

≤4

1

188

3

318

320 (97.3)

9 (2.7)

streptomycin

0.25-4

≤8

0.75

191

3

327

329 (100)

tetracycline

0.032-0.5

≤1

0.094

165

0.25

324

329 (100)

doxycycline

0.023-0.19

≤1

0.047

212

0.094

319

329 (100)

  1. aDefinitions: S – susceptible, I- intermediate susceptibility, R – resistant; 1No – number of isolates