A study of the drug resistance pattern of Group B Streptococcus isolated from urinary samples in the city of Salmas during the year 2015

Aim and Urinary tract infections (UTI) are considered as the most common bacterial infections in young children, adults and women. Therefore appropriate treatment is necessary immediately after diagnosis. In the present study strains of Group B Streptococcus were isolated from urine to determine the drug-resistant.
This cross-sectional descriptive study was carried out on 3676 patients at reference laboratory of Salmas city in 1394 of which 2754 were women and 922 were men. Mid-stream urine samples taken from patients were transferred to the Todd Hewith media then were cultured in blood agar. Antibiotic susceptibility of streptococcal strains and drug-resistance patterns were conducted using the disk diffusion method on the Mueller Hinton culture medium according to guideline standards.
Out of 3678 samples, 47 samples (36 females and 11 males) showed positive results. Group B Streptococcus was mostly resistant against oxazoline and clindamycin. The rest of drug-resistancy pattern respectively includes gentamicin, tetracycline, ceftizoxime, amikacin, cephalexin, trimethoprim, ampicillin, ciprofloxacin, and cefixime.
Considering the prevalence of urinary tract infections, especially in children under 2 years and also in girls, the knowledge of local resistance pattern and well-timed treatment are imperative. This study showed that group B Streptococcus represents the highest frequency of drug resistance. This issue requires more attention of Health officials is Salmas city.