Despite its mellifluous moniker, Naegleria fowleri (nuh-GLEER-ee-uh FOWL'-erh-eye) is an unfriendly microscopic critter. It eats human brains. From APL
It sounds like science fiction but it's true: A killer amoeba living in lakes enters the body through the nose and attacks the brain where it feeds until you die.
Even though encounters with the microscopic bug are extraordinarily rare, it's killed six boys and young men this year. The spike in cases has health officials concerned, and they are predicting more cases in the future.