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Table 3 Resistance of serogroup 6 S. pneumoniae to several antimicrobials by CCs/STs

From: Population biology of 225 serogroup 6 Streptococcus pneumoniae isolates collected in China

CC/STs

No.

CXMa

IPMa*

ERYa*

CHLa*

TCYa

SXTa

MDRa(%)

I%

R%

I%

R%

R%

I%

R%

I%

R%

ST982

52

0

0

0

98.1

3.8

1.9

98.1

1.9

98.1

98.1

CC90

41

4.9

87.8

19.5

100

58.5

0

95.1

4.9

92.7

100

CC4542

25

0

0

8.0

96.0

8.0

0

100

4.0

88.0

92.0

ST2912

11

0

0

0

100

0

36.4

45.5

9.1

63.6

63.6

CC4536

15

6.7

0

0

66.7

46.7

0

100

20.0

46.7

73.3

CC2754

15

0

6.7

0

100

6.7

0

93.3

13.3

86.7

93.3

CC8616

10

0

0

10.0

90.0

10.0

0

90.0

0

90.0

90.0

CC386

10

0

0

0

100

0

10.0

80.0

0

10.0

40.0

Others

46

6.5

39.1

8.7

93.5

26.1

4.3

80.4

15.2

63.0

91.3

Total

225

2.7

24.4

6.7

95.1

21.8

3.6

90.2

7.6

78.7

89.8

  1. Note: All 225 strains were susceptible to amoxicillin–clavulanic acid, ceftriaxone, vancomycin, and levofloxacin.
  2. aCXM: cefuroxime; IPM: imipenem; ERY: erythromycin; CHL: chloramphenicol; TCY: tetracycline; SXT: sulfamethoxazole; MDR: multidrug resistance.
  3. *No intermediate or resistant isolate was identified.