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Histoplasmosis is caused by a fungus*. The fungus lives in the environment especially in dirt where bird or bat poop can be found.


How can I get sick? 

  • Breathing fungal spores, often from dirt that has bat or bird poop in it. A person can breathe in the dust or fungus and become infected.  

Symptoms in humans:  

Some people may not have any symptoms while others may have the following:  

  • Fever (when your body gets a little hotter than normal) 

  • Cough 
  • Feeling very tired 
  • Chills (feeling of being cold and shivering) 
  • Headache 
  • Chest pain  
  • Body pain 

90% of people who get Histoplasmosis don’t have any symptoms or have mild symptoms.   

What can I do to stay healthy? 

  • Don’t breathe in dust from chicken coops, caves, during remodel or construction or anywhere where bird or bat poop is found.  
  • Wear a mask when exploring caves or cleaning chicken coops.  


  • Fungus: A simple organism, or living thing, that is neither a plant nor an animal

Learn About Other Diseases

Click below to learn more about the many different diseases that can spread between animals and humans.