Journal of Pure and Applied MicrobiologyVol. 9 No. Special Edition Nov. 2015

Prevalence and Antibiotic Resistance of Enterococci Species Isolated from Clinical Samples

Reza Faraji1, Najma Asadi2, Foroozandeh Qasemi Kahtooie3, Mohammadtaghi Sarebanhassanabadi3, Ali Dehghani Firoozabadi3, Masoud Negahdary3 and Adel Eftekhari4*

1Department of Microbiology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran. 2Department of Pathology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. 3Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. 4Department of Nursing, School of Nursing and Midwifery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

Received on 06 July 2015 and accepted on 10 September 2015

 

ABSTRACT

Enterococcus is an important pathogen all around the world, known as an important nosocomial pathogen. This study determined the strains and antibiotics susceptibility of Enterococci isolated from clinical samples in Imam Ali Hospital in Kermanshah, Iran, from July 2014 to July 2015. This experimental study was performed on 58 Enterococci strains isolated from clinical samples in Imam Ali Hospital in Kermanshah, Iran. Patients? information was collected by a questionnaire. After isolating and identifying 58 strains of Enterococci from clinical samples, complimentary tests were carried out. Antibiogram test was performed by Kirby-Bauer disk diffusion method and CLSI criteria. Statistical analysis was performed using the SPSS 16. The frequencies of the isolated Enterococci species included E. faecalis with 72.41% (42 cases), E. feacium with 13.79% (8 cases), E. hirea with 6.9% (4 cases), E. avium with 3.44% (2 cases), E. gallinarium with 1.73% (1 case), and E. mundtii with 1.73% (1 case). Most of Enterococci strains were isolated from urine samples with 48.27% (28 cases). The highest and lowest resistances were to penicillin (95%) and linezolid (0%), respectively. We found a significant statistical difference between Enterococcus and time of hospital stay (P = 0.03). Based on the results of the present study, E. faecalis was, by far, the most predominant isolate. This suggests that in order to prevent the antibiotic resistance and select an appropriate antibiotic before the treatment, antibiogram test should be done for each patient.

Keywords : Enterococcus, nosocomial infections, antibiotic resistance.