Table 1 Serotype distribution and penicillin and amoxicillin susceptibility among study isolates (n = 390). VTs are marked in bold. Shannon diversity index calculated for the STs found in each serotype

Total

390

329 (84.4%)

61 (15.6%)

380 (97.4%)

5 (1.3%)

5 (1.3%)

15B/C

48 (12.3%)

1.81

47

1

48

11A

40 (10.3%)

0.31

37

3

38

2

15A

30 (7.7%)

1.45

21

9

29

1

23B1

27 (6.9%)

1.36

27

27

21

25 (6.4%)

0.77

25

25

35F

23 (5.9%)

0.98

22

1

23

35B

21 (5.4%)

1.71

18

3

19

1

1

10A

18 (4.6%)

1.43

18

18

23A

18 (4.6%)

0.93

18

18

3

13 (3.3%)

0

13

13

Non-typeable

13 (3.3%)

1.63

6

7

9

3

1

Serogroup 24

11 (2.8%)

0.30

11

11

22F

10 (2.6%)

0

10

10

16F

8 (2.1%)

0.38

7

1

8

33F

8 (2.1%)

1.21

8

8

7C

7 (1.8%)

0

7

7

17F

7 (1.8%)

1.00

7

7

19A

7 (1.8%)

1.15

6

1

7

9N

6 (1.5%)

0.45

6

6

12F

6 (1.5%)

0.64

2

4

6

23B

6 (1.5%)

0.87

6

6

8

5 (1.3%)

0

5

5

19F

5 (1.3%)

1.61

4

1

4

1

31

5 (1.3%)

0.50

5

5

34

5 (1.3%)

1.33

5

5

38

5 (1.3%)

0

5

5

6C

4 (1.0%)

0.56

3

1

4

13

2 (0.5%)

0.69

1

1

2

35D

2 (0.5%)

0.69

2

2

6B

1 (0.3%)

0

1

1

10B

1 (0.3%)

0

1

1

15F

1 (0.3%)

0

1

1

20

1 (0.3%)

0

1

1

37

1 (0.3%)

0

1

1