THE DIFFERENTIATION OF AEROBACTER AEROGENES AND AEROBACTER CLOACAE

Abstract

A descr. is given of 411 Escherechiae strains, most of which have the IMVIC reactions[long dash]++. On the basis of morphology and biochemical tests it is suggested that those strains at present called Aerobacter cloacae and designated in this paper as group 1 constitute a homogeneous group of organisms with properties which distinguish them from Klebsiella. The characteristic features of this new group are: inability to ferment inositol or glycerol and liquefaction of gelatin. The strains are nonencapsulated, frequently motile, late salicin fermenters, do not ferment dulcitol, and frequently do not utilize urea. The Klebsiella group includes those strains generally called Aerobacter aerogenes and designated in this paper as group 11. The differential characteristics of the 2 groups are discussed.