Antifungal Drugs: The Battle Against Fungal Infections Mycology, the branch of biology that deals with the study of fungi, has a wide range of applications in various fields such as agriculture, medicine, and food industry. In the medical field, one area that mycologists focus on is the development of antifungal drugs. These drugs are essential in the battle against fungal infections, which can be life-threatening if left untreated. Fungal infections are caused by different types of fungi including yeast, mold, and dermatophytes.