Identifications and Antimicrobial Susceptibilities of Enterococci Species Isolated from Clinical Samples

Enterococcus is an important group of bacteria that live as normal flora in human gastrointestinal tract and animal¡ but under certain circumstances they can cause infection. The aim of this study was to identifications and antibiotics susceptibility of Enterococci isolated from clinical sample in Imam Ali Hospital Kermanshah¡ Iran¡ from July 2014 to July 2015.
This descriptive–analytic study was performed on 58 of Enterococci strains isolate during one year period from clinical sample (urine¡ blood¡ wound¡ sputum¡ feces) in Imam Ali Hospital Kermanshah¡ Iran. Complimentary tests were carried out after isolating and identifying 58 strains of Enterococci from clinical sample. Antibiotic susceptibility test was using Kirby-Bauer disk diffusion method and CLSI criteria. Statistical analysis was performed using the SPSS 16.
The results showed that 42 cases (72/41%)¡ 8 cases (13/79%)¡ 4 cases (6/9%)¡ 2 cases (3/44%)¡ 1 case (1/73%)¡ and 1 case (1/73%) were E. faecalis¡ E. feacium¡ E. hirea¡ E. avium¡ E. gallinarium¡ and E. mundtii respectively. Most of Enterococci strains isolated from urine samples with 48.27% (28 cases). The mostly resistant to penicillin (95%) while lowest antibiotic resistance to linezolid (0%). A significant statistical difference between Enterococcus and length of stay in hospital was found (P = 0.03).
Based on the results of present study¡ the most separated species from the patients was E. faecalis. And also suggests in order preventing the antibiotic resistance and an appropriate antibiotic before the treatment¡ antibiogram test done for each patient.