Table 2

Distribution of MIC's to several antibiotics among S. epidermidis isolated from mastitis and healthy women

Percentage of strains for which the MIC (μg mL-1) was as follows:


Antibiotics

Breast milk

N° of strains

≤ 0.03

0.12

0.25

0.5

1

2

4

8

> 8


PEN

H

36

17

8

8

14

14

8

11

19

M

40

10

5

5

8

10

33

8

8

18


AMP

≤ 0.12

0.25

0.5

1

2

4

8

100

> 100


H

36

19

6

17

22

8

8

6

14

M

40

15

8

5

23

20

10

5

13

3


OXA

≤ 0.25

0.5

1

2

> 2


H

36

11

31

11

8

39

M

40

5

8

13

8

68


CIP

≤ 0.25

0.5

1

2

> 2


H

36

47

39

8

6

M

40

30

38

18

3

13


CHL

≤ 8

16

> 16


H

36

75

17

8

M

40

78

10

13


ERY

≤ 0.25

0.5

1

2

4

> 4


H

36

39

14

6

8

33

M

40

23

15

3

60


CLI

≤ 0.5

1

2

> 2


H

36

81

8

3

8

M

40

70

3

28


TET

≤ 4

8

> 8


H

36

56

19

25

M

40

68

8

25


VAN

≤ 0.5

1

2

4

8

16

≥ 16


H

36

44

50

6

M

40

43

48

5

3

3


MUP

≤ 4

256

> 256


H

36

78

11

11

M

40

58

13

30


H: strains isolated from healthy women; M: strains isolated from mastitis-suffering women; PEN: penicillin; AMP: ampicillin; OXA: oxacillin; CIP: ciprofloxacin; CHL: chloramphenicol; ERY: erythromycin; CLI: clindamycin; TET: tetracycline; VAN: vancomycin; MUP: mupirocin.

Statistically-significant differences between isolates from mastitis and healthy women are in bold.

Delgado et al. BMC Microbiology 2009 9:82   doi:10.1186/1471-2180-9-82

Open Data