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Further Note on the Classification of Vibrios of the 1945 Cholera Epidemic in Chungking
In studies of the cholera epidemic in Chungking in 1945 (1), cultures of vibrios derived from several patients were classified as of the Ogawa type in one laboratory. The same strains were sent to Dr. William Burrows of the University of Chicago, who reports different results (2). He has recently proposed the classification of Vibrio comma on a serologic basis, but substituting the eponymic or place-name classification with a preferable one of capital letters to indicate the antigenic structure (3). According to his studies, three strains were classified as type AB or of the Ogawa type; two were type AC or the Inaba type; two were type ABC corresponding to the Hikojima type, and two contained antigen B but lacked A. The last mentioned, according to Burrows' scheme of classification, would not belong to 0 subgroup 1 and presumably are not cholera vibrios.Strains of the various types, as classified, showed no orderly pattern of resistance to streptomycin.