The complex study of the adhesive, colicinogenic and antigenic properties of S. typhi of different origin has revealed that adhesive properties can be observed more frequently in the strains isolated from the blood and bile and are completely absent in the strains isolated from feces. S. typhi strains of various origin do not essentially differ in their sensitivity to colicins and in the capacity for their production. Among the strains isolated from feces and bile, agents in the W-form occur more frequently than among the strains isolated from the blood. Escherichia coli, isolated from typhoid patients and carriers at the moment of the persistence of S. typhi in the body, are characterized by faintly pronounced antagonistic properties, enhanced sensitivity to colicins and rather pronounced hemagglutinating activity.
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