Recovery of Yersinia enterocolitica from patients with gastrointestinal disturbances. Lack of efficacy of alkali method.

Direct plating medium on cefsulodin-irgasan-novobiocin agar was as effective as 2-day enrichment in peptone-sorbitol-bile salts broth for recovery of Yersinia enterocolitica from fecal samples of patients with gastrointestinal disturbances. Alkali treatment of fecal specimens failed to enhance recovery of Y. enterocolitica through either method.