Missouri man battles deadly brain infection after waterskiing, raising awareness about rare amoeba risk.

A Missouri man is fighting a rare and deadly brain infection caused by the amoeba Naegleria fowleri after waterskiing at Lake of the Ozarks. The infection, primary amebic meningoencephalitis, is usually fatal, with only four survivors in the U.S. since 1962. Symptoms include headache, fever, nausea, and vomiting, leading to severe brain damage. Health officials advise limiting water entering the nose and avoiding warm freshwater activities to reduce infection risk.