A Campy blood agar plate incubated at 42° C from a stool exhibits colonies that are nonhemolytic, moist, "runny looking," and spreading. The Gram stain shows tiny gram-negative rods with some S-shapes and seagull-wing shapes. What is growing on the plate?

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Quizplus · Accepted Answer

The nonhemolytic, moist, "runny looking," and spreading colonies on a Campy blood agar plate incubated at 42° C are typical for Campylobacter species. The gram-negative rods with S-shapes and seagull-wing shapes are also characteristic of Campylobacter. Aeromonas and Helicobacter do not typically exhibit these colony morphology or gram stain characteristics, and Acinetobacter is not usually associated with clinical specimens from stools.

A Campy Blood Agar Plate Incubated at 42° C from a Stool