The Prevalence of Antibiotic Resistance to Polymyxins in Clinical Isolates of Acinetobacter baumannii in Iran and the World: A Systematic Review and Meta-Analysis

Acinetobacter baumannii is one of the most important opportunistic pathogens responsible for several nosocomial infections. A major problem in treatment is antibiotic resistance.
By searching international and national databases, including PubMed, Google Scholar, Web of Science, SID, Magiran, IranDoc and IranMedex, 38 articles between years 2002 to 2016 published world-wide were extracted and analyzed using the meta-analysis method and random effects model. The heterogeneity of studies was assessed using the I2 index. Data were analyzed with the R and STATA (Ver 11/2) software.
Forty-three articles were selected for this study. Drug-resistance of Acinetobacter baumannii towards Polymyxin was reported as 5%, yet for Colistin 4% was estimated. Resistance rates to Polymyxin and Colistin in the continent of America and Asia was 6% and Sensitivity rate to Polymyxin and Colistin was 96% and 80%, respectively.
Given that drug resistance rate of Acinetobacter baumannii to Polymyxin and Colistin in this study was 5% and 4%, respectively, thus indicating high sensitivity of Acinetobacter baumannii to these antibiotics, this group can be administered as appropriate therapeutic agents against these bacteria.