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Amebic meningoencephalitis in the brain caused by Naegleria fowleri. The disease was imaged by direct fluorescent antibody staining. Credit: CDC

Louisiana's state health department has issued a warning about the dangers of improperly using nasal-irrigation devices called neti pots, responding to two recent deaths in the state that are thought to have resulted from "brain-eating amoebas" entering people's brains through their sinuses while they were using the devices.

via lifeslittlemysteries.com