The Fda Has Approved Astellas' Antifungal Treatment Cresemba (Isavuconazonium Sulfate) For The Treatment Of Invasive Aspergillosis And Invasive Mucormycosis. The Life-Threatening Fungal Infections, Also Known As Or Zygomycosis, Predominantly Occur In Patients That Have A Weakened Immune System.Bernie Zeiher, Head Of Infectious Disease At Astellas, Said: