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Table 5 Frequencies of beta-lactam resistance and clinical characteristics of study isolates according to STs

From: Multilocus sequence typing and ftsI sequencing: a powerful tool for surveillance of penicillin-binding protein 3-mediated beta-lactam resistance in nontypeable Haemophilus influenzae

  

rPBP3a

Bla b

Proportions (%) of isolates and patientsc

STs

n

n

%

n

%

Anatomical sites

Age groups

Hospitalizedd

Eye

Ear

Respiratory

0-3

≥50

ST367

29

29

100

0

0

17

17

59

28

34

28

ST396

16

16

100

5

31

56 e

6

38

81 f

13

38

ST201

15

15

100

0

0

53 e

0

47

47

27

47

ST159

12

1

8

0

0

8

8

75

33

42

50

ST14

11

11

100

1

9

18

0

73

64

9

55

ST12

8

7

88

0

0

50

13

38

38

13

25

ST395

8

0

0

0

0

63 e

0

25

63

25

0

ST57

6

4

67

3

50

33

17

50

83

17

33

Other STs

91

33

36

7

8

19

16

60

58

19

25

All STs

196

116

59

16

8

27

12

56

46

22

31

  1. aPBP3-mediated resistance (see Table 1).
  2. bBeta-lactamase positive (all TEM-1).
  3. cProportions for each ST were compared with the proportions for other STs (e.g. ST396 versus non-ST396) using Fisher’s exact test. Characteristics significantly more prevalent in particular STs are indicated (bold).
  4. dProportions of patients hospitalized at the time of sampling.
  5. ep < 0.05.
  6. fp = 0.004.