2023 was the hottest summer in the past 2,000 years, and summer 2024 is looking to be just as intense. As summer peaks, freshwater lakes and pools all over the United States will likely be filled with people trying to cool off. But as the temperatures of these freshwater environments rise, the organisms that live in them can shift, posing harmful, or even lethal, threats to swimmers.
Naegleria fowleri is one such threat that seems primed to start infecting more people — but surprisingly, it hasn't done so yet.
