Ecology, Environment and Conservation Paper

Vol 25, Issue 3 2019; Page No.(1450-1454)

ANTIBACTERIAL SUSCEPTIBILITY PATTERNS OF CLINICAL STAPHYLOCOCCUS AUREUS ISOLATED FROM PATIENTS WITH EAR INFECTION IN MISAN CITY, IRAQ

Rashid Rahim Hateet

Abstract

The present study was designed to study prevalence of multidrug resistant Staphylococcus aureus, which was done in Maysan, Iraq, during the period (February 2016 to January 2017). A total of 180 ear swab were collected from patients with ear infection with or without discharges. Microbiological investigation includes (culture and identification of causative agents’ antibiotic sensitivity). Collected swabs were taken under sterile condition and transferred immediately to the laboratory through brain heart broth tubes, Primary isolation on selective media to Staphylococcus (mannitol salt agar) at 37 °C for 24 - 48 hr. then the identification and the biochemical testes were carried out rendering to standard monotonous techniques (Alghaithy, et al., 2000). Antimicrobial susceptibility tests were done on Mueller-Hinton agar using disk diffusion method as described by Kirby Bauer. 144 (88.88%) isolates diagnosed as Staphylococcus aureus and 18 (11.11%) as other bacteria. S.aureus isolates tested for antibiotic susceptibility high antibiotic resistance to Ampicillin, Carbenicillin and Amoxicillin, mid resistance to Teicoplanin and Co.trimoxazole and sensitive to Imipenem, Gentamicin, Rifampicin, Ciprofloxacin. S.aureus isolates showed multiple antibiotic resistance. The MAR index of the isolates ranged between 0.04 and 0.10. Therefore, the aim of this study was to determine the bacterial isolates and their drug susceptibility patterns from patients. This study exposed that ear infection in patients is highly prevalent caused by S. aureus, Most of the isolates showed high levels of antimicrobial resistance to commonly prescribed antimicrobial and there is the prevalence of antibiotic resistant strains which make a problem in treatment ear infection. High percent of isolated S.aureus found to be resistant to Ampicillin, Amoxicillin and Carbenicillin that may be due to the irrational use of this antibiotic.

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