A study just found brain-eating amoeba in 2 popular U.S. national parks. Here’s what you need to know

‘Naegleria fowleri’ was detected in tourist hot spots across the country. Learn about the risks, safety guidance, and symptoms of infection. Yes, you read that right: Brain-eating amoeba have been found in two popular U.S. national parks, according to a recent study from the U.S. Geological Survey, and a number of other institutions, published in the American Chemical Society’s journal, ES&T Water.