KROK 1 2012 – Question 107 · KROK (Medicine) · Microbiology, Virology, and Immunology

A 10-year-old child had the mantoux tuberculin test administered. 48 hours later a papule up to 8 mm in diameter appeared on the site of the injection. What type of hypersensitivity reaction developed after the tuberculin injection?

  1. A. Seroreaction
  2. B. Atopic reaction
  3. C. Type II hypersensitivity reaction
  4. D. Arthus phenomenon
  5. E. Type IV hypersensitivity reaction
Hint

Note the 48-hour delay and the papule at the injection site, and ask whether antibodies or sensitised cells carry out this skin reaction.

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