Characterize carbapenem-resistant Klebsiella pneumoniae isolates for nosocomial pneumonia and their Gram-negative bacteria neighbors in the respiratory tract

  • Dongmei Zhao
  • Yan Zuo
  • Zhongxin WangEmail author
  • Jiabin LiEmail author
Original Article


This study was conducted to perform an epidemiological survey of carbapenem-resistant Klebsiella pneumoniae (CRKP) isolates for nosocomial pneumonia (NP) and visit their Gram-negative bacteria neighbors (GNNs) from the respiratory tracts. Pulsed-field gel electrophoresis and multi locus sequence typing were performed to evaluate the clonal relationships of these isolates. Statistical methods were then used to understand their possible relationship between CRKP and their GNNs. Among the 63 CRKP isolates, 84.1% produced a KPC-2 carbapenemase gene, followed by blaNDM-1 and blaIMP-38 like. 13 different STs and 29 clones were identified. Less heterogeneous clone backgrounds were observed in 53 KPC-2 K. pneumoniae isolates, and 6 STs have been found to contain KPC-2, of which the predominant ST11 harbored 47 KPC-2-producing K. pneumoniae isolates. Particularly, the two infrequent isolates co-possessing blaKPC-2 and blaIMP-38 like shared a different clonal relationship. 87 GNNs isolates of CRKP were established, the analysis present that different strains showed significant or no difference with CRKP upon antibiotics susceptibility. Conclusion, ST11 harboring KPC-2-producing K. pneumoniae isolates were dominant for NP, and both clonal spread and horizontal transfer contributed to the dissemination of CRKP. However, additional studies are needed to explore the biological relationship with their GNNs.


Carbapenem-resistant Klebsiella pneumoniae Nosocomial pneumonia Gram-negative bacteria Biological relationship 



This work was supported by National Natural Science Foundation of China (Grant No. 81673242).

Supplementary material

11033_2018_4515_MOESM1_ESM.doc (442 kb)
Supplementary material 1 (DOC 442 KB)


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Department of Infectious DiseaseThe First Affiliated Hospital of Anhui Medical UniversityHefeiChina
  2. 2.Department of Clinical LaboratoryThe First Affiliated Hospital of Anhui Medical UniversityHefeiChina

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