Micro & Immunology · single question

Which is the most common fungal species (among these options) in the oral cavity?

  1. Aspergillus
  2. Blastomyces
  3. Cryptococcus
  4. Histoplasma
Show answer and explanation

Correct answer: A. Aspergillus

  • A. Correct among the choices. (Candida albicans is actually the most common oral fungus overall, but it is not listed; of these, Aspergillus is the most commonly encountered.)
  • B. Blastomyces is a rare dimorphic systemic fungus.
  • C. Cryptococcus mainly causes meningitis in the immunocompromised.
  • D. Histoplasma is a systemic dimorphic fungus, uncommon orally.

Note: The true most-common oral fungus is Candida albicans, which is not offered; the best of the listed options is Aspergillus.

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