Bat feces can be harmful to people due to inhalation of which hazard?

• A. Bacteria
• B. Viruses
• C. Spores
• D. Prions

Answer: (C)

When bat feces are disturbed, fungal spores from Histoplasma capsulatum become airborne and can be inhaled. These spores can reach the lungs and cause histoplasmosis, which is the primary inhalation hazard associated with bat guano. Bacteria or viruses can be present in guano, but the airborne risk most tied to inhalation is the fungal spores. Prions are not related to bat droppings and are not inhaled from guano.

When cleaning or handling bat droppings, take precautions to prevent dust: dampen the area to minimize aerosolization, wear a respirator rated for mold/fungal spores, gloves, and eye protection, and dispose of material properly to reduce exposure.