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Table 1 Antibiotic disc diffusion (mm) of Salmonella Typhimurium strains

From: Evaluation of lytic bacteriophages for control of multidrug-resistant Salmonella Typhimurium

Antibiotic disc

S. Typhimurium

KCCM40253

S. Typhimurium

ATCC19585

S. Typhimurium

ATCC19585-CIP

S. Typhimurium

CCARM8009

AMP

27.4 ± 0.5 (S)

24.3 ± 0.5 (S)

22.4 ± 0.7 (S)

6.00 (R)

CEF

33.3 ± 0.9 (S)

31.5 ± 0.4 (S)

28.8 ± 0.6 (S)

32.0 ± 0.5 (S)

CEP

24.8 ± 0.8 (S)

24.8 ± 0.8 (S)

22.7 ± 0.4 (R)

25.2 ± 0.5 (S)

CHL

27.1 ± 0.4 (S)

25.7 ± 0.3 (S)

24.9 ± 0.7 (S)

23.5 ± 0.3 (S)

CIP

34.6 ± 0.6 (S)

33.2 ± 0.7 (S)

30.7 ± 1.0 (R)

30.9 ± 0.7 (R)

KAN

21.8 ± 0.9 (S)

21.8 ± 0.3 (S)

21.4 ± 0.6 (S)

6.00 (R)

LEV

31.0 ± 0.5 (S)

31.6 ± 0.5 (S)

27.4 ± 0.9 (R)

28.3 ± 0.5 (R)

MER

34.2 ± 0.5 (S)

32.3 ± 0.2 (S)

31.8 ± 1.2 (S)

32.5 ± 0.7 (S)

NAL

24.6 ± 0.9 (R)

23.3 ± 0.6 (R)

6.00 (R)

23.6 ± 0.7 (R)

NOR

32.5 ± 0.7 (S)

31.8 ± 0.5 (S)

28.6 ± 0.6 (R)

29.5 ± 0.4 (R)

SMA/TMP

23.6 ± 0.6 (S)

25.7 ± 1.0 (S)

24.4 ± 0.5 (S)

22.7 ± 0.5 (R)

TET

18.6 ± 0.8 (R)

19.3 ± 0.6 (S)

17.4 ± 0.2 (R)

7.5 ± 0.1 (R)

  1. S and R indicate susceptible and resistant strain. AMP, ampicillin (10 µg); CEF, cefotaxime (30 µg); CEP, cephalothin (30 µg); CHL, chloramphenicol (30 µg); CIP, ciprofloxacin (5 µg); KAN, kanamycin (30 µg); LEV, levofloxacin (5 µg); MER, meropenem (10 µg); NAL, nalidixic acid (30 µg); NOR, norfloxacin (10 µg); SMA/TMP, sulfamethoxazole/trimethoprim (1.25/23.75 µg); TET, tetracycline (30 µg)