Sonne dysentery is an inflammatory condition of the small and large intestine characterized by a bloody and mucoid diarrhea accompanied by colic, having a short incubation period and being of a relatively nontoxic type. The disease is caused by the Bacillus dysenteriae of Sonne, which has many points of clinical, cultural and agglutination similarity to the organism causing the Flexner type of dysentery, for which it is often mistaken.
Our purpose in this communication is to present the general subject of Sonne dysentery and the detailed clinical, bacteriologic and experimental studies of a recent outbreak. The disease has been practically unknown in the United States. There is reason for believing, however, that this distinctive type of dysentery has been overlooked, that it is endemic in many parts of this country, that it can assume epidemic proportions and that there is a possible connection with certain intestinal and arthritic diseases of