Hospital Acquired Infections by Carbapenem Resistant Enterobacteriacea

Mohamed, Abeer Sheneef; Mahmud, Tamer; Darweesh, Eman Ebrahim; Mohammed, Dina

doi:10.21608/smj.2017.39622

Hospital Acquired Infections by Carbapenem Resistant Enterobacteriacea

Document Type : Original Article

Authors

¹ Departments of 1Medical Microbiology and Immunolog ,Faculty of Medicine, Sohag University

² Department of anesthesia and ICU,Sohag University, sohag,Egypt

³ Departments of Medical microbiology and immunology و faculty of medicine ,sohag university

10.21608/smj.2017.39622

Abstract

CRE) infections have become an increasing concern for healthcare services worldwide. Community and hospital-acquired infections caused by these bacteria have been associated with significant morbidity and mortality with limited treatment options. Rapid and accurate detection of carbapenem resistance in these bacteria is important for infection control. Objectives: To detect the prevalence of carbapenem resistant Enterobacteriaceae (CRE) species and determine their antimicrobial susceptibility profile using the Vitek 2 system and detect the presence of carbapenemases genes using Multiplex PCR. Methodology: Various clinical samples were collected from 469 patients admitted in Sohag university hospitals in the period between April 2016 and August 2017, CRE isolates were identified by conventional methods and antimicrobial susceptibility testing using disc diffusion method and also performed by Vitek 2 automated system, Multiplex PCR was used for detection of carbapenemases genes as blaKPC, blaVIM, blaIMP, blaNDM-1 and blaOXA-48. Results: The prevalence of carbapenem resistant Enterobacteriaceae (CRE) species was 19.9%, Klebsiella pneumoniae was the most common species (51.4%), Escherichia Coli (28.6%), Enterobacter aerogenes(8.6%), Acinetobacter baumannii (5.7%), Vitek 2 system identified CRE isolates with 82.7% sensitivity, 98.6 % specificity and 90.6% diagnostic accuracy, 25.7 % of CRE strains were isolated from the internal ICU and 20 % from chest department and mostly isolated from urine(40%) and from endotracheal tubes swabs(28.6%), 77.1% of CRE isolates contained carbapenemases genes, 62.1 % were blaKPC positive, 20.7 % were blaVIM-positive, 3.4 % were blaNDM-positive, 13.8 % were blaOXA-48-positive and none was blaIMP-positive. Conclusion: Conventional methods supported by Vitek 2 system is a valuable method for identification of CRE species, the detected carbapenemases genes in this study indicates that carbapenem resistance is spreading in Egypt and support the use of molecular methods for the rapid detection of CRE for successful implementation of infection control measures, we recommend routine testing to determine carbapenem resistance in Enterobacteriaceae in health facilities in Egypt.
Keywords: Carbapenem, Enterobacteriacea, Vitek 2, Multiplex PCR
Corresponding author: Tamer Mohamed Mahmoud, Department of Medical Microbiology and Immunology, Sohag University. E-mail: tamermmm2000@yahoo.com

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