Evaluation of three differential media for detection of Enterobacter agglomerans (Erwinia herbicola).

Dextrin-fuchsine-sulfite medium (DFS), Rimler-Shotts agar (RS), and a new lysine-ornithine-mannitol agar (LOM) were tested for detection of Enterobacter agglomerans. In human stools, LOM and DFS were most sensitive at coliform-to-E. agglomerans ratios of less than or equal to 10(2) and E. agglomerans inocula of greater than 10(2) per plate. Both LOM and DFS detected one strain in 254 stools, but RS proved to be inhibitory.