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Table 1 blaKPC and virulence-associated factors of the 285 K. pneumoniae isolated from BSIs

From: Bloodstream infections caused by Klebsiella pneumoniae: prevalence of blaKPC, virulence factors and their impacts on clinical outcome

Characteristics Total (n = 285) bla KPC + bla KPC P valuea HMKP cKP P valueb
(n = 95) (n = 190) (n = 69) (n = 216)
bla KPC 95 (33.3) 3 (4.3) 92 (42.6) < 0.001
Virulence factors
 HM phenotype 69 (24.2) 3 (3.2) 66 (34.7) < 0.001
 K1 28 (9.8) 1 (1.1) 27 (14.2) < 0.001 18 (26.1) 10 (4.6) < 0.001
 K2 22 (7.7) 0 22 (11.6) 0.001 21 (30.4) 1 (0.5) < 0.001
 K5 3 (1.1) 0 3 (1.6) 0.55 2 (2.9) 1 (0.5) 0.15
 K20 3 (1.1) 1 (1.1) 2 (1.1) 0.99 2 (2.9) 1 (0.5) 0.15
 K54 6 (2.1) 0 6 (3.2) 0.18 4 (5.8) 2 (0.9) 0.03
 K57 3 (1.1) 0 3 (1.6) 0.55 3 (4.3) N 0.01
 K-nontypable 220 (77.2) 93 (97.9) 127 (66.8) < 0.001 19 (27.5) 201 (93.1) < 0.001
magA 24 (8.4) 0 24 (12.6) < 0.001 17 (24.6) 7 (3.2) < 0.001
rmpA 90 (31.6) 2 (2.1) 88 (46.3) < 0.001 62 (89.9) 28 (13.0) < 0.001
  1. Data are presented as No. (%) unless otherwise specified
  2. Abbreviations: HM hypermucoviscous, HMKP hypermucoviscous K. pneumoniae, cKP classic K. pneumoniae
  3. ablaKPC+ vs blaKPC
  4. bHMKP vs cKP