Abstract Background Gram-negative bacterial bloodstream infections (GNB-BSI) are common and frequently lethal. Many patients experience multiple episodes of GNB-BSI for unclear reasons. This study examines the genetic differences between initial subsequent isolates recurrent GNB-BSI. Methods We used a prospective cohort with at Duke Hospital to identify >1 episode due same species. perfo...

the nosocomial infections, caused by multi-drug resistant bacteria, are the most important cause of mortality throughout the world. one important mechanism against beta-lactam antibiotics is the production of beta-lactamases. enterobacteriaceae and non-fermentative bacteria, like pseudomonas aeruginosa and acinetobacter baumannnii may produce these enzymes. currently, there is no vaccine to pre...

rheum ribes is among the polygonaceae family which is endemic in iran and a few neighboring countries. in this investigation, antibacterial effects of root, stalk and leaves extracts of rheum ribes on a few common clinical isolates of gram negative pathogens were studied, using the cup plate and paper disc methods. gram negative microorganisms studied were escherichia coli, klebsiella pneumonia...

antibiotic resistance of intensive care unit (icu) born aerobic gram-negative bacteria was evaluated during a six months period at a teaching hospital in tehran, and determination of the validity of the results obtained from disc diffusion tests, using discs manufactured in iran. disc susceptibility tests using iranian and standard discs (diffusion discs available in international markets) were...