Blastomyces dermatitidis is a topic covered in the Johns Hopkins HIV Guide.

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MICROBIOLOGY

  • Dimorphic fungus. One of the "endemic fungi."
  • In North America found along Mississippi, Missouri, St. Lawrence and Ohio rivers, and the regions that border Great Lakes in U.S. and Canada.
    • Occurs in Africa, and a few cases have been reported in Europe, Mexico, Central and South America, the Middle East and India. Most cases reported in North America.
  • Grows as a broad-based budding yeast at 37oC. At 25oC, produces mycelia and can produce conidia.
  • Grows in moist soil with acidic pH and high organic content (decaying vegetation, close to water, areas of high humidity).
  • Commercially available molecular probe offers rapid identification of culture.

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Last updated: May 2, 2015