Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 30 3-4 2001 12 15 123 124 F Vaezzadeh MK Sharifi-Yazdi 2015 10 03 Urine specimens from 6656 children clinically suspected of urinary tract infection were evaluated bacteriologically. Bacterial colony count of over (103) colony forning units CFU/ ml were found in 480 (7.2%) of total cases, with 342 (71.25%) girls and 138 (28.75%) boys. Bacterial etiology of positive culture were determind. Escherichia coli was the most frequent etiologic agent (75.62%) followed by klebsiella species (7.32%). The antimicrobial resistance behaviour of Escherichia coli to routinely used antibiotics were tested. Most strains of Escherichia coli were resistant to cotrimoxazole (82%) and ampicillin (82%), but none of them were resistant to ceftizoxime. Correlation between positive urine culture and pyuria for the diagnosis of UTI was compared. It was noted that approximately 38% of paitents with positive urine culture did not have pyuria. https://ijph.tums.ac.ir/index.php/ijph/article/view/1656 https://ijph.tums.ac.ir/index.php/ijph/article/download/1656/1637