KROK 1 2017 – Question 46 · KROK (Medicine) · Microbiology, Virology, and Immunology

A child with suspected colienteritis was delivered to the infectious diseases hospital. Colibacillus was obtained from the child’s feces. How to determine whether this bacillus is of pathogenic variety?

  1. A. Microscopy of stained smears
  2. B. Based on its biochemical properties
  3. C. Agglutination reaction with serum O
  4. D. Based on the nature of its growth in Endo medium
  5. E. By means of bacteriophage typing
Hint

Ask which property of E. coli actually separates enteropathogenic strains from harmless intestinal strains: look for a marker that differs between them.

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