What causes histoplasmosis?

Histoplasmosis is caused by the inhalation of spores from the fungus Histoplasma capsulatum, which is often found in soil that is contaminated with bird or bat droppings. When these droppings decompose, they can release the fungal spores into the air, allowing people to breathe them in, particularly in areas like caves or locations where birds roost. Once inhaled, the spores can lead to respiratory issues, making awareness of this transmission route important, especially for those working with wildlife or in areas where these droppings accumulate.

Other options, while they highlight various methods of disease transmission, do not relate to histoplasmosis specifically. For example, exposure to contaminated water is more associated with diseases like leptospirosis, and direct contact with infected animals can lead to other zoonotic diseases rather than histoplasmosis. Lastly, consumption of undercooked meat is related to foodborne illnesses rather than respiratory fungal infections. Understanding the specific transmission route of histoplasmosis helps in implementing effective prevention strategies, especially for wildlife control operators who may be at greater risk.