Isolation of Mima Polymorpha from Dairy Products

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Abstract
During the routine bacteriological examination of a number of pasteurized dairy products, a rather unusual colony type developed on violet red bile agar from 2 products. The colonies were red, spindle-shaped and less than 0.3 mm in length. The organism from agar culture appeared as a gram-negative diplococcus and from broth as negative rods in pairs. Biochemical testing identified the organism as Mima polymorpha. The organism did not survive 60 C for 30 min. in either milk or broth culture. Members of the tribe Mimeae have been implicated in cases of meningitis, septicemia and endocarditis. A further study of their occurrence and distribution in food products is under way.

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