Aspergillus is a genus of filamentous fungi that encompasses a diverse group of molds commonly found in the environment. With over 200 known species, Aspergillus plays a significant role in decomposing organic matter and contributing to nutrient cycling. However, some species within this genus can pose health risks, particularly for immunocompromised individuals. Aspergillus fumigatus is the most clinically relevant species, causing a range of respiratory infections, including allergic bronchopulmonary aspergillosis (ABPA), invasive aspergillosis, and chronic pulmonary aspergillosis. Infections by Aspergillus species are often associated with individuals with weakened immune systems, such as those undergoing chemotherapy or organ transplantation. Inhalation of Aspergillus spores can lead to colonization of the respiratory tract, with invasive disease occurring in severe cases. Allergic reactions to Aspergillus antigens can also result in hypersensitivity lung diseases. Diagnosing Aspergillus infections requires a combination of clinical evaluation, imaging studies, and laboratory tests, including cultures and molecular techniques. Antifungal medications, such as voriconazole, are commonly used for treatment.
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