Sputum infectious agent Positive Blastomyces dermatitidis sputum fungal stain 2025-04-26T13:13:44Z Blastomycosis is a fungal infection caused by Blastomyces dermatitidis. It presents as a pulmonary infection after the inhalation of spores, and it may be either asymptomatic or have severe life-threatening complications like acute respiratory distress syndrome. Demonstration of Blastomyces dermatitidis by microscopic examination of a stained sputum specimen. Blastomyces dermatitidis on sputum fungal stain