A drug-resistant “superbug” fungus continues to spread across the U.S., now present in 23 states. And despite efforts to contain its spread, the fungus — Candida auris — continues to spread across the nation, with nearly half of U.S. states reporting cases in 2026. Cases have exploded across the U.S. in the last decade, with federal health officials sounding the alarm. Candida auris is a fungus that can spread quickly in hospitals and nursing homes and is often resistant to multiple antifungal drugs. But people in healthcare settings navigating other serious health issues are vulnerable.