KROK 1 Stomatology 2013 – Question 147 · KROK (Dentistry)

On the base of the clinical data a child was diagnosed with atypical pneumonia resistant to the effects of beta-lactam antibiotics. The patient’s sputum was cultured and incubated in a special medium, which resulted in growth of microorganisms forming microscopic colonies with a dense center (looking like fried eggs). What microorganism caused the disease?

  1. A. Legionella pneumophila
  2. B. Streptococcus pneumoniae
  3. C. Klebsiella pneumoniae
  4. D. Chlamydia pneumoniae
  5. E. Mycoplasma pneumoniae
Hint

Link natural resistance to beta-lactams with the bacterial structure these drugs target, and match it with the characteristic colony morphology on special media.

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