Histoplasmosis is a serious infection of?

This sounds serious. If I didn't see the pic of the lung area, I probably would have gotten the question wrong.

calicot, it is real. A friend's father died from this after cleaning out his birdhouses in the fall. Always wear a mask and gloves when doing this chore.

if it's also from Ohio river ,it is bound to kill people

an anti hista mine makes one breath easier