INTRODUCTION: Urinary tract infections are one of the most common infections in young children. Febrile conditions in young children, without specific clinical signs and symptoms are often the result of ITU. Usually later diagnosed and treated. The most common cause of ITU is Escherichia coli. The main problem in the treatment of ITU is increasing resistance to antibiotics. AIM: To point out all the frequent resistance to antibiotics and to compare the frequency of the experimental periods. MATERIAL AND METHODS: We performed a retrospective study in the period of 2010-2015. Urine samples for microbiological examination were taken before switching on antibiotics. Statistical analysis was performed in SPSS software. RESULTS: In our study found 183 patients with a diagnosis of ITU. Somewhat higher percentage were present, patients were female. The highest resistance to ampicillin was found in our results in the time period is 5 years, found a drop resistance Amoxicilin and Amoksiklav. DISCUSSION: Our results showed a strong similarity with the works on the same theme, which is Escherichia coli, the most common cause of ITU in young children. ITU are represented within the female population. CONCLUSION: It is important to continuously monitor the representation of urinary tract infections as well as their sensitivity to antimicrobial drugs, because of the increasing presence of the bacterial resistance to existing antibiotics.

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