An elderly male patient presented with fever, chest pain, and dry cough, sputum culture showed growth on charcoal yeast Extract Medium, theorganism is______________?

Correct answer: C. Legionella

  • A. H. influenza
  • B. Moraxella catarrhalis
  • C. Legionella
  • D. Burkholderia cepacia

Explanation

Legionella requires the enriched charcoal yeast extract medium, often supplemented with cysteine and iron, for growth. The clinical picture of atypical pneumonia with dry cough also supports Legionella infection.

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