Deadly Aspergillus Fungus Could Surge in U.S. as Climate Warms, Experts Warn

A potentially deadly fungus, Aspergillus, could soon haunt more corners of the U.S., Europe, and Asia, researchers warn, as rising global temperatures create ideal conditions for its spread. This mold, thriving in warm, damp environments, triggers Aspergillosis—a serious infection threatening humans, livestock, and crops.

According to a recent study, climate models predict a staggering 77% increase in the fungus’s prevalence by 2100, potentially exposing millions to its risks. While healthy individuals often inhale Aspergillus spores without issue, those with weakened immune systems—such as cancer patients or the elderly—face severe dangers, including pneumonia or systemic infections that can spiral into life-threatening conditions.

Experts note a troubling rise in fungal infections across agriculture and veterinary medicine, signaling broader ecological impacts. For those with asthma or allergies, the fungus can also spark respiratory flare-ups, adding to its menace. Complicating matters, Aspergillus is notoriously hard to diagnose and treat, with limited antifungal drugs and growing resistance posing further challenges.

While avoiding soil exposure may help, the fungus’s environmental ubiquity makes it a persistent threat. Researchers call for urgent advancements in diagnostics, treatments, and medical training to combat this growing health crisis.