Because of the large number and diversity of genera included in the Enterobacteriaceae, it is helpful to consider
the bacteria of this family as belonging to one of two
major groups.For this reason, the discovery
of these species in clinical specimens should alert laboratorians
to possible identification errors; careful confirmation of both the
laboratory results and the clinical significance of such isolates is
warranted.General Characteristics
Nucleic acid-based analysis has not proven effective for