The fungal pathogen Histoplasma capsulatum belongs to the family of Onygenaceae and is thermally dimorphic, i.e. depending on the ambient temperature it grows in mould form (approx. 25 °C) and becomes a budding yeast at 37 °C (infectious form).
The fungus may cause histoplasmosis, a systemic mycosis (fungal infection).
Transmission mainly occurs via droplets or particles in the air.
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