“The buildup of bat guano, or feces, can accumulate ... oily stains on the side of your house where they’re rubbing up against it as they enter. You also may find droppings on the side ...

According to a study published in Open Forum Infectious Disease, the Rochester residents died from pneumonia after the bat waste, known as guano, released a harmful fungus called Histoplasma ...

It was not immediately clear when they died. “Exposure to bat guano among cannabis growers appears to be a recent trend that can lead to histoplasmosis cases and outbreaks,” University of ...