Table 1 Salmonella enterica isolates and minimum concentration of ciprofloxacin (CIP) and ceftazidime (CAZ) required to inhibit their growth.

From: Salmonella enterica persister cells form unstable small colony variants after in vitro exposure to ciprofloxacin

Isolates (ID)

Origin

MIC (µg/ml)

CIP

CAZ

S. Agona (S48)

Feathers meal

0.01

2

S. Agona (S79)

Meat meal

0.005

1

S. Enteritidis (152)

Ready-to-eat-food

0.005

0.5

S. Enteritidis (192)

Poultry carcass

0.01

1

S. Enteritidis (393)

Food handler

0.01

1

S. Enteritidis (4SA)

Porcine faeces

0.005

1

S. Enteritidis (S45)

Meat meal

0.005

2

S. Infantis (S02)

Meat meal

0.01

2

S. Infantis (S67)

Viscera meal

0.03

1

S. Schwarzengrund (S58)

Flesh and bones meal

0.005

1

  1. MIC, minimum inhibitory concentration.
  2. MIC breakpoints for CIP: ≤0.06 µg/ml, susceptible; 0.12–0.5 µg/ml, intermediate; ≥1 µg/ml, resistant. MIC breakpoints for CAZ: ≤4 µg/ml, susceptible; 8 µg/ml, intermediate; ≥16 µg/ml, resistant (CLSI Document M100-S28)32.
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