Investigation of clonal relationship in Klebsiella pneumoniae strains grown in invasive specimens obtained from intensive care units
Küçük Resim Yok
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
J Infection Developing Countries
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Introduction: Carbapenem-resistant Klebsiella pneumoniae (CRKP) is a bacterium in critical category on the World Health Organization's list of priority pathogens. The aim of our study is to identify the carbapenem resistance genes of K. pneumoniae isolates obtained from blood and cerebrospinal fluid samples sent from the intensive care units of our hospital and to investigate the clonal relationship among them. Methodology: K. pneumoniae strains isolated from blood and CSF samples routinely collected from the intensive care units of our hospital over a two-year period were included in the study. Carbapenemase screening of CRKP strains was performed using Carba NP and CIM tests. Additionally, carbapenemase resistance genes (blaKPC, blaNDM, blaVIM, blaIMP, and blaOXA-48) and clone analysis were performed using AP-PCR on these strains. Results: A total of 186 strains with reduced susceptibility to at least one carbapenem were detected. In carbapenemase screening, the sensitivity of the CIM test was 98.3% (169/172), specificity was 7.1% (1/14); the sensitivity of Carba NP was 90.7% (156/172), specificity was 78.6% (11/14). 83.9% of the strains were blaOXA-48, 4.8% blaNDM, and 3.8% blaKPC positive. blaIMP and blaVIM resistance genes were not detected. One hundred and eighty-six K. pneumoniae isolates were identified with 62 different genotypes, and isolates showing clustering were grouped into 30 different clusters. The clustering rate of these isolates was 82.8%. Conclusions: Resistant bacteria can cause small outbreaks in ICUs. Therefore, to identify high-risk clones and prevent further spread, there is a need to increase capacity to support outbreak investigations and surveillance with real-time whole genome sequencing.
Açıklama
Anahtar Kelimeler
bloodstream infection, carbapenem-resistant, clonal relationship, Klebsiella pneumoniae, multidrug-resistant
Kaynak
Journal of Infection in Developing Countries
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
19
Sayı
11
