TABLE 1. The MIC Range (mg/ml) of 6 Strains of L. lactis ss. lactis and 13 Strains of L. garvieae  (4). 

Drug

L. lactis

L. garvieae

Vancomycin

   <1.0

   <1.0

Amoxicillin-clavulanic acid

<0.12/0.6-1.0/0.48

0.48/0.24-l.0/0.48

Ampicillin

  <0.12-0.24

   0.48

Penicillin

    0.12-0.24

   1.0a

Chloramphenicol

    2.0-4.0

   2.0-4.0

Clindamycin

    <0.12

   >8.0b

Erythromycin

    <0.12

   <0.12

Cephalothin

    <1.0-4.0

   4.0-8.0

Cefuroxime

    <4.0

   <4.0

Ciprofloxacin

    <1.0-4.0

   <1.0-2

Norfloxacin

    <4.0-16.0

   <4.0-16.0

Trimethoprim-sulfamethoxazole

    <1.0/19

   <1.0/19

Tetracycline

    <2.0

   <2.0->8.0

 

 

 

aOne isolate required an MIC of penicillin of  0.24 mg/ml.

bOne isolate required an MIC of clindamycin  of  >2.0 mg/ml.