Heat Boosts Brain-Eating Amoeba Threat in Global Waters

Rising temperatures expand Naegleria fowleri’s habitat in warm freshwater, raising the global risk of deadly infections that occur when contaminated water enters the nose. Infections are rare but highly fatal (about 95–99%). Prevention centers on avoiding nasal exposure (no submerging the head, nose clips), using sterile or boiled water for nasal rinsing, and maintaining proper chlorination and flushing of water systems, as climate change broadens the amoeba’s range in recreational waters.