International Journal of Molecular and Clinical Microbiology Determining the Frequency of Antibiotic Sensitivity in Blood Infections in

Determination of the frequency of bacteria isolated from blood culture and the pattern of their antibiotic sensitivity is epidemiologically of great importance and can help choosing primary antimicrobial treatment. The aim of the current study was to determine the most common bacterial factors of blood infection and their antibiotic sensitivity in a one year period from October 2010 till the end of September 2011 in Imam Khumeini hospital of Ardebil. Data collected from total of 1469 patients susceptible to blood infection hospitalized in Imam Khumeini hospital and analyzed using SPSS (version 18) statistical software and investigated with descriptive statistics and frequency diagrams. Only values with P0.05 were considered as significant. The highest rate of bacteremia prevalence observed in emergency unit. Of 1469 blood sample, 91 (6.19%) were infected with bacteria. Infection prevalence reported higher in male (55.4%) than to female (44.6%). The most common bacteria isolated were, Negative-coagulase Staphylococcus (37.3%), Escherichia coli (22%), Staphylococcus aureus (11%) and Staphylococcus epidermidis (11%), respectively. The highest antibiotic sensitivity was associated with Gentamicin with the frequency rate of 42 (51.3%) and Ciprofloxacin with the frequency rate of 35 (42.7%)