If the phrase “brain-eating amoeba” sounds like something out of a sci-fi horror movie, you’re not alone. In Arizona, it’s a very real concern that lurks in warm fresh water during the hottest months.

Naegleria fowleri, commonly called the brain-eating amoeba, is a rare but serious threat in warm freshwater during hot months. The amoeba enters through the nose and travels to the brain, causing a ...