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Table 4 Number of strains by MIC colistin values and mcr PCR results

From: Antimicrobial resistance profile and prevalence of extended-spectrum beta-lactamases (ESBL), AmpC beta-lactamases and colistin resistance (mcr) genes in Escherichia coli from swine between 1999 and 2018

Colistin

MIC (μg/mL)

mcr-1

mcr-4

mcr-5

mcr absencea

Resistant

> 8

1

2

0

4

4

0

0

0

3

Sensitive

2

2

2

0

44

< 2

11

20

6

83

  1. amcr-1, mcr-2, mcr-3 mcr-4 and mcr-5 were tested