Skip to main content

Advertisement

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.