It's nearly always fatal, and it's showing up farther north than ever. Here's what to know before you swim this summer.

Corrections and clarifications: An earlier version misstated the nature of amoebas, which are single-celled eukaryotic organisms. A single-celled organism known as the “brain-eating amoeba” was found ...

The Naegleria fowleri amoeba can cause a rare but fatal brain infection that progresses quickly and can’t be cured. It has been found in several recreational locations in the U.S., with the number of ...

Brain infections caused by so‑called brain‑eating amoebas have long been treated as medical curiosities, terrifying but vanishingly rare. That framing is starting to look dangerously outdated. As the ...

Nevadans looking to explore the great outdoors should be aware of the single-celled organism known as the "brain-eating amoeba." The amoebas were found in two of the U.S.'s most popular national parks ...

A new study found an often fatal, brain-eating amoeba in three western U.S. National Parks and recreation areas. The amoeba, Naegleria fowleri, is rare but has a 98% fatality rate. A person can become ...

A new federal study has found a rare but dangerous “brain-eating amoeba” in warm recreational waters at several western national park sites — including the Lake Mead National Recreation Area, ...

OUACHITA PARISH, Louisiana -- Brain-eating amoebas have been detected in two water systems in Louisiana, the state's health department said Thursday. Health officials reassured residents that drinking ...