Table 3 MDR and MAR index of the MRSA isolates.

From: Characterization of resistance and virulence factors in livestock-associated methicillin-resistant Staphylococcus aureus

Isolates

No antimicrobial class

No of antibiotics

Resistance phenotype

No resistant isolates

MAR index

Nasal isolates (n = 38)

3

4

PENR, ETPR, CROR, CTXR

20 (52.6)

0.20

5

6

PENR, ETPR, CLIR, TETR, CROR, CTXR

15 (39.5)

0.30

5

7

PENR, ETPR, MEMR, CLIR, TETR, CROR, CTXR

13 (34.2)

0.35

8

11

PENR, PTZR, ETPR, MEMR, TETR, CLIR, ERYR, CIPR, CROR, CTXR, VANR

8 (21.1)

0.55

Rectal isolates (n = 38)

3

4

PENR, ETPR, CROR, CTXR

29 (76.3)

0.20

4

5

PENR, ETPR, CLIR, CROR, CTXR

22 (57.9)

0.25

5

7

PENR, ETPR, MEMR, TETR, CLIR, CROR, CTXR

19 (50.0)

0.35

7

10

PENR, PTZR, ETPR, MEMR, TETR, CLIR, ERYR, CROR, CTXR, VANR

16 (42.1)

0.50

9

13

PENR, PTZR, ETPR, MEMR, KANR, GENR, TETR, CLIR, ERYR, CIPR, CROR, CTXR, VANR

10 (26.3)

0.65

Total isolates (n = 76)

3

4

PENR, ETPR, CROR, CTXR

49 (64.5)

0.20

4

5

PENR, ETPR, CLIR, CROR, CTXR

41 (53.9)

0.25

5

7

PENR, ETPR, MEMR, TETR, CLIR, CROR, CTXR

33 (43.4)

0.35

8

11

PENR, PTZR, ETPR, MEMR, TETR, CLIR, ERYR, CIPR, CROR, CTXR, VANR

22 (28.9)

0.55

9

14

PENR, PTZR, IMIR, ETPR, MEMR, KANR, GENR, TETR, CLIR, ERYR, CIPR, CROR, CTXR, VANR

7 (9.2)

0.70

  1. PEN Penicillin G, PTZ Piperacillin, IMI Imipenem, ETP Ertapenem, MEM Meropenem, KAN Kanamycin, GEN Gentamicin, TET Tetracycline, CLI Clindamycin, ERY Erythromycin, CIP Ciprofloxacin, CRO Ceftaroline, CTX Cefotaxime, VAN Vancomycin. Values in parentheses represent percentages (%).