Routine typing of <i>Clostridium welchii</i>

Abstract

During the investigation of a number of epidemics of Clostridium welchii food poisoning (Hobbs, Smith, Oakley, Warrack &amp; Cruickshank, 1953) the opportunity arose of examining some 500 different strains of Cl. welchii for toxigenicity. Work on so large a scale made it essential to develop a routinefor this purpose, and after several trials we devised the folio whig sequence of tests, which have proved entirely satisfactory in our hands, and may be of interest to others.