citrobacter diversus brain abscess: case reports and molecular epidemiology. | citrobacter diversus brain abscess occurred in two infants in aberdeen, 5 months apart. these are the first reported cases of this condition in the uk since 1976. restriction endonuclease analysis with saci enzyme showed blood and csf isolates from both patients to be identical and different from 10 other clinical isolates of c. diversus and one c. amalonaticus strain. furthermore, isolates of c. diversus from patients belonged to biotype "d" whereas control isolates were of biotypes "a" or "e". ... | 1992 | 1560449 |