The method described in this paper has its greatest value in the diagnosis of bacillary dysentery, since it greatly enhances the chance of recovering the specific bacillus in culture. Repeated culturing of the dejecta in certain cases of bacillary dysentery prior to the use of this method has resulted negatively so far as growth from the stool of dysentery bacilli is concerned. These cases undoubtedly fall in a group that are chronic, and the causal agents are apparently down deep in the lesions, so that very few escape to the contents of the intestine, too few to be detected by the casual examination of the stool.
According to my experience, the application of the method concerns especially the strain of dysentery bacilli known as the lactose fermenter. This strain was discovered and first described by Duval1 in 1904.
The bacillus of Duval, which is the lactose fermenter, was isolated
SILVERMAN DN. A NEW METHOD OF DIAGNOSIS IN BACILLARY DYSENTERY. JAMA. 1937;109(13):1024–1027. doi:10.1001/jama.1937.02780390026010