Abstract
Summary
Of 315 microorganisms selected at random from stool cultures of persons in Chicago, 49 or 15.5%percnt; showed cross-reactions with diagnostic cholera sera when examined with the slide test, and 7 or 2.2%percnt; with the serial test-tube dilution method. The common antigen seems to be the “A” fraction of V. comma and part of its “H” antigen, which also occurs in Brucellae and Salmonellae.
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