Bacteriological study of Enterobacter spp. that isolated from different clinical specimens

The clinical specimens (718) were collected from inpatients and outpatients suffering from different infectious from (Al-Hussein, Maternity and Children, Surgical) hospitals and general laboratory health in Al-Nassiriyah city during the period from February 2011 to June 2012. Enterobacter isolates which were diagnosed according cultural and biochemical tests as well as API 20E . Eighty four isolates of Enterobacter were collected (32%) among G- ve and (18% ) from total isolates .It was distributed to 25(21%) from urine , 16 (19%) skin and soft tissues , 11(23%) stool , 11(17%) burn infections , 10 (22%) ENT , 5(28%) blood , 3(100%) CSF and 3(12%) post operations wounds ., and two species of Enterobacter , E.cloacae (89.3%) and E.sakazakii (10.7 %) were diagnosed . The virulence factors of bacteria were detected and the results showed that all isolates were produced of siderophore , and most isolates were capsule formation , but give negative result for haemolysin and protease . Also, 80 (95%) of Enterobacter has the CFA / III and 15(18 %) of isolates are bacteriocin production.