The High mortality and antimicrobial resistance of Klebsiella pneumoniae bacteremia in northern Taiwan

  • Chyi-Liang Chen Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
  • Pin-Chun Hou Department of Medicine, Chang Gung University, College of Medicine, Taoyuan, Taiwan
  • Yun-Ting Wang Department of Medicine, Chang Gung University, College of Medicine, Taoyuan, Taiwan
  • Hao-Yuan Lee Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
  • Ying-Li Zhou Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung Memorial Hospital, Taoyuan
  • Ting-Shu Wu Division of Infectious Diseases, Department of Internal Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
  • Rajendra-Prasad Janapatla Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
  • Chien-Chang Yang Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
Keywords: Klebsiella pneumoniae, bloodstream infection, serotype, multidrug resistance, mortality

Abstract

Introduction: Klebsiella pneumoniae, a common hospital- and community-acquired pathogen, is notorious for multidrug resistance. This study aimed to better understand the correlation of clinical presentation and microbiological characteristics of the isolates causing bloodstream infections (BSIs) in Taiwan.

Methodology: We retrospectively collected 150 isolates derived from K. pneumoniae bacteremia patients in Taiwan in both 2014 and 2016. Clinical data, bacterial serotyping and drug susceptibility tests were comparatively analyzed.

Results: Demographic data showed that diabetes mellitus (DM) was the most common underlying disease (44.0%). The overall 30-day mortality rate was 19.3%, and higher mortality was found in patients with malignancy than others (P = 0.023). Serotype distribution was diverse. The major isolates belonged to non-PCR-typeable serotypes (58.7%) associated with hospital-acquired infections (P = 0.007) and in non-DM patients (P < 0.001), while K2 and K20 significantly caused infections and in DM patients (P = 0.046 and P = 0.006, respectively); however, only K2 showed more community-acquired infection (P = 0.022) than other typeable serotypes. Resistance to antibiotics in clinical isolates in the year 2016 was > 24%, including cefazolin (54%), ampicillin-sulbactam (25%) and cefuroxime (25%). Susceptibility to gentamicin, flomoxef, and tigecycline reduced between the two time periods (2014 and 2016). However, the isolates remained highly susceptible to amikacin and ertapenem (> 95%).

Conclusions: Patients with cancer had a higher 30-day mortality rate than others. Amikacin and ertapenem are the drugs of choice for the treatment of multidrug-resistant K. pneumoniae BSIs in Taiwan.

Published
2020-04-30
How to Cite
1.
Chen C-L, Hou P-C, Wang Y-T, Lee H-Y, Zhou Y-L, Wu T-S, Janapatla R-P, Yang C-C (2020) The High mortality and antimicrobial resistance of Klebsiella pneumoniae bacteremia in northern Taiwan. J Infect Dev Ctries 14:373-379. doi: 10.3855/jidc.11524
Section
Original Articles