A gram-negative rod is isolated from the bronchial aspirate of an individual who inhaled a minnow while swimming at Lake of the Ozarks in central Missouri. The organism is oxidase positive. Which of the following organism identifications is least likely for this isolate?

Question

Quizplus · Accepted Answer

E. coli is a gram-negative rod but is oxidase negative, making it the least likely option among those listed, which are all oxidase positive.

A Gram-Negative Rod Is Isolated from the Bronchial Aspirate of an Individual