103. Fungal infections overview and series intro

Fungal infections represent a significant yet under-recognized global health crisis, causing approximately 2.5 million deaths annually—a mortality rate comparable to HIV, malaria, and tuberculosis combined. The rise in serious fungal disease stems from an increasing population of immunocompromised patients, including those undergoing organ transplants or chemotherapy. Clinically, these pathogens span a spectrum from superficial mucocutaneous infections to life-threatening invasive conditions, yet diagnostic tools and therapeutic options remain limited, with only four classes of antifungal drugs currently available. The World Health Organization’s 2022 priority pathogen list highlights the urgent need for improved surveillance, laboratory capacity, and research investment. Alyssa, a microbiology registrar and expert in medical mycology, joins the series to navigate the complex taxonomy of these organisms, distinguishing between yeasts, moulds, and dimorphic fungi to better equip clinicians for managing these often-fatal infections.