Aspergillus infections are caused by a group of fungi known as Aspergillus. These fungi are commonly found in the environment, particularly in soil, decaying plant matter, and indoor dust. While most people can breathe in these spores without any issues, individuals with weakened immune systems or lung diseases are at higher risk of developing infections. The most common type of Aspergillus infection is aspergillosis, which can affect the lungs and other parts of the body. Symptoms may include cough, fever, and difficulty breathing. Treatment typically involves antifungal medications, and early diagnosis is crucial for effective management.