Final answer:
Histoplasmosis is a fungal infection caused by Histoplasma capsulatum. It primarily affects the respiratory system.
Step-by-step explanation:
Histoplasmosis is a fungal infection caused by Histoplasma capsulatum. This disease primarily affects the respiratory system. The causative agent is a dimorphic fungus that grows as a filamentous mold in the environment and as a budding yeast during human infections. Histoplasmosis is often referred to as Valley fever.