A 22-year-old male has recently adopted an Akita puppy that develops diarrhea soon after he takes it home. He soon develops bloody diarrhea and visits his physician
The doctor submits a stool for routine culture and ova and parasite examination. The O & P examination was negative. The routine culture reveals no Salmonella, Shigella, or verotoxin producing E. coli. On special medium, at a unique temperature and atmosphere, a slightly spreading, gray, flat colony is observed. A Gram stain of the colony provides gram-negative rods that appear "S" shaped. Which of the following tests can be used to screen and presumptively identify this stool pathogen?
A) Hippurate hydrolysis B) Indoxyl acetate
C) Catalase and oxidase D) All of the above
C
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