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Oxacillin resistance was present in 99 of 277 (36%) consecutive Staphylococcus aureus isolates collected from hospital patients in Tehran during a 15-month period (January 2004-March 2005). The(More)
BACKGROUND Extended-spectrum beta-lactamase (ESBL)-producing strains of Klebsiella pneumoniae have caused major therapeutic problems worldwide since the majority are resistant to various antibiotics.(More)