DYSENTERY due to Shigella alkalescens is still not a reportable disease in many parts of the United States. This is regrettable since S. alkalescens is a true member of the Shigella group with all its epidemiologic implications. It produces the characteristic intestinal lesions of bacillary dysentery. The fact that the disease may occur in a mild form does not detract in the least from its potential dangers. In children and some adults severe intestinal and renal infections may result.
The history of S. alkalescens infections parallels that of Sonne-Duval dysentery. The latter, originally described by Duval in 1904, was not accorded its proper clinical significance until Sonne's work in 1914. Since then, undoubted evidence of its pathogenicity has been presented. The same historical evolution appears to be taking place in the case of S. alkalescens. Originally described by Andrewes in 1918,1 properly documented evidence of its pathogenicity