Table 1 Genetic profiles of hypervirulent Klebsiella pneumoniae isolates from Vietnam
Characteristics | Hypervirulent Klebsiella pneumoniae (n = 111) | ||||||
|---|---|---|---|---|---|---|---|
ST23 (n = 59) | ST86 (n = 12) | ST65 (n = 9) | ST420 (n = 6) | ST268 (n = 5) | ST25 (n = 4) | ST Others (n = 16) | |
Key virulence factors | |||||||
  Salmochelin: iro | 59 | 12 | 9 | 6 | 5 | 4 | 16 |
  Aerobactin: iuc | 59 | 12 | 9 | 6 | 5 | 4 | 16 |
  Yersiniabactin: ybt | 56 | 8 | 5 | 6 | 5 | 2 | 13 |
  Colibactin: clb | 48 | 0 | 5 | 0 | 5 | 0 | 1 |
  Hypermucoid phenotype: rmpA/A2 | 37 | 7 | 5 | 2 | 3 | 3 | 7 |
O antigens | |||||||
  O1 | 50 | 10 | 8 | 5 | 0 | 4 | 10 |
  O2 | 9 | 1 | 1 | 1 | 5 | 0 | 4 |
  O3 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
  O4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
K capsules | |||||||
  K1 | 56 | 0 | 0 | 0 | 0 | 0 | 0 |
  K2 | 0 | 7 | 7 | 0 | 0 | 3 | 1 |
  K5 | 0 | 4 | 2 | 0 | 0 | 1 | 2 |
  K20 | 0 | 0 | 0 | 6 | 5 | 0 | 1 |
  K113 | 2 | 0 | 0 | 0 | 0 | 0 | 4 |
  Others | 1 | 0 | 0 | 0 | 0 | 0 | 9 |
Plasmid replicons | |||||||
  IncFIBK | 59 | 12 | 9 | 6 | 5 | 4 | 16 |
  IncFII | 5 | 1 | 2 | 0 | 2 | 2 | 2 |
  IncFIB(pKPHS1) | 12 | 0 | 0 | 1 | 0 | 0 | 2 |
  IncR | 2 | 0 | 0 | 0 | 0 | 1 | 0 |
  IncA/C | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
  IncN | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
