Where does histoplasmosis come from?

Histo is a fungus that lives in soil, especially moist soil that has been enriched with organic
material such as wild bird droppings or poultry house litter. Histo does not infect birds nor
is it found in their droppings, but may be found in bat droppings. When composted, bird and
bat droppings do provide conditions that allow histo to multiply. Histo is found throughout
the world including the United States, and especially the Ohio River valley.