Notes on Organisms Serologically Related to S. Enteritidis Gärtner. I.: The Dublin and Tokyo Types of Salmonella

Pioneer studies seemed to resolve the organisms of the Salmonella group into four types or groups sharply marked off from one another by their agglutinative reactions: S. typhosus, S. paratyphosus A, S. enteritidis Gärtner and a “paratyphoid B group.” Later work has shown the heterogeneity of the old paratyphoid B group, which approximates to what we may now term the series of diphasic types; and further that S. typhosus and S. paratyphosus A, far from standing in serological isolation, display striking and peculiar relationships to certain members of this series: the flagellar antigen of the typhoid bacillus closely resembles that of the specific phase of the diphasic Stanley type, less closely that of the Bombay type; both in flagellar and somatic antigen S. paratyphosus A coincides with the specific phase of the diphasic Sendai type (typical paratyphus A bacillus of Aoki and Sakai, 1926).