👉 Anaerosporidium is a genus of fungi that belongs to the class Bradychomycetes, which also includes the genus Penicillium. They are primarily involved in the growth and reproduction of anaerobic organisms such as bacteria and yeasts, particularly those that require oxygen but cannot utilize it directly due to their inability to form pyruvate or other sugars from carbon dioxide and water. Anaerosporidium is a major cause of foodborne illness caused by some species,