Exam questionKROK 1Medicine · 2013
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?
Answer options
- Yersinia enterocolitica
- Salmonella enteritidis
- Escherichia coli
- Proteus vulgaris
- Pseudomonas aeruginosa
Correct answer
Escherichia coli
Explanation
E. coli. This is because even though t is inoculated in Endo’s agar it forms pink colonies unlike all other microbes listed.
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