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Table 4 Comparison of microbiological characteristics of clinical K. pneumoniae strains

From: Clinical characteristics of patients with pneumonia caused by Klebsiella pneumoniae in Taiwan and prevalence of antimicrobial-resistant and hypervirulent strains: a retrospective study

Microbiological characteristics of isolatesCAP (n = 68)HCAP (n = 74)HAP (n = 134)p value
CAP vs. HCAPHCAP vs. HAPCAP vs. HAP
Capsular type K113 (19.1)8 (10.8)13 (9.7)0.1640.7990.059
Capsular type K214 (20.6)15 (20.3)16 (11.9)0.9630.1060.102
Capsular type K1 and K227 (39.7)23 (31.1)29 (21.6)0.2820.1320.007
Capsular type K1, K2, K5, K20, K54, and K5746 (67.6)35 (47.3)50 (37.3)0.0140.161< 0.001
Presence of plasmid rmpA53 (77.9)40 (54.1)53 (39.6)0.0030.044< 0.001
Presence of plasmid rmpA249 (72.1)38 (51.4)52 (38.8)0.0110.080< 0.001
Hvpervirulent K. pneumoniaea54 (79.4)41 (55.4)55 (41.0)0.0020.047< 0.001
Hvpervirulent K. pneumoniae with antimicrobial resistanceb3 (4.4)7 (9.5)13 (9.7)0.3300.9550.272
Hvpervirulent K. pneumoniae with multidrug resistancec2 (2.9)4 (5.4)8 (6.0)0.6821.0000.500
  1. aHvpervirulent K. pneumoniae is defined as isolates with rmpA/rmpA2 genes
  2. bAntimicrobial resistance is defined as non-susceptibility to at least one antimicrobial agent in addition to ampicillin
  3. cMultidrug resistance is defined as non-susceptibility to at least one agent in three or more antimicrobial categories
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