KROK 1 2013 – Question 6 · KROK (Medicine) · Microbiology, Virology, and Immunology
A 12-year-old boy has been hospitalized for suspected food poisoning. The fecal samples were inoculated on the Endo agar, which resulted in growth of a large number of colorless colonies. What microorganism is most likely to be EXCLUDED from the list of possible causative agents of the disease?
- A. Proteus vulgaris
- B. Pseudomonas aeruginosa
- C. Salmonella enteritidis
- D. Escherichia coli
- E. Yersinia enterocolitica
Hint
Think about what the colour of colonies on a lactose-containing indicator medium tells you about the sugar fermentation of the bacteria that grew.
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