INTRODUCTION: Bacteremia, is regarded as a significant reason in all over the world for morbidity and mortality in mainly sick patients. Invasion by microorganisms in blood constitutes the critical issues in infectious disease. The aims and objectives are to find out the pathogenic agents infecting males and females in blood of different age groups and naturally used antimicrobial sensitivity profiles. METHODS: All the blood samples were collected aseptically and tested in Popular Diagnostic Centre, Dhaka, Bangladesh between May, 2020 and October, 2020. Total 305 blood specimens from both sexes of different age groups were collected. Cultural analysis was performed by Gram staining, phenotypic examination, biochemical and serological analysis. Finally, antibiotic susceptibility test was done against commonly used antibiotics. RESULTS: 96 (31.47%) samples yielded a positive culture with predominant isolate being Salmonella typhi (41.66%)  though Salmonella spp., Salmonella typhi, Staphylococcus spp and Pseudomonas spp. were also detected. Like most of previous reports, Salmonella spp was predominant, this corroborates this study. But the profile of antimicrobial susceptibility of the detected organisms varied comparing studies which were done in the past. The isolates were found mostly resistant to nalidixic acid. Most of the pathogens showed tremendous susceptibility against ceftriaxone, cefixime, ceftazidime etc. CONCLUSION: The antibiotic selection for the treatment of bacteraemia in patients should always be serious concern due to multidrug resistant (MRD) bacterial isolates. For proper treatment of anti-bacterial resistance and critical mortality and morbidity should be related with the sickness. For validating more reliability, this research requires further work.

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Antibiotics, alternatively known as antibacterial drugs, prevent or reduce the development of germs. A decade has been added to the life expectancy of human beings since the discovery of antibiotics. Antibiotic overuse can result in resistance to a wide spectrum of diseases and bacteria. Antibiotic utility is being jeopardized by the rise of resistance. There aren't enough innovative agents to deal with the problem of resistant strains. The current study targeted to highlight the current status of antibiotic use.The study was designed as a prescription-based survey where the medicines in prescriptions were checked containing antibiotics, whether the drugs were prescribed rationally or not. The study was conducted from February to July 2018 at Khwaja Yunus Ali Medical College and Hospital, Bangladesh. Patient’s data were collected through review of patient medical records and prepared questionnaires. 100 people were interviewed, and their prescriptions were captured as photos and then checked for rationality.The antibiotics are prescribed in the group of 10 to 30 years, 31 to 50 years and more than 50 years of age.The survey demonstrated that 46% of patients know about antibiotics partially, about 74% of patients fulfill their entire course of medication and the rest of the patients stop taking medication after feeling better. Only 21% of patients knew about antibiotic resistance, whereas 37% of patients only heard about antibiotic resistance. According to the age group from low to high, 92.9%, 91.67%, 86.36% prescriptions were rational; 2.4%, 2.78%, 4.55% prescriptions were contraindicated and 4.7%, 5.56%, 9.1% prescriptions where medicines interacted with other non-antibiotic drugs, respectively. The overall rational prescription is 91%, whereas 3% of prescriptions are contraindicated and 6% of prescriptions showed interaction between antibiotics and other drugs (non-antibiotics).The study concluded that lack of knowledge and awareness of patients and inaccurate prescription data by physicians are two key factors that contribute to irrational antibiotic usage.