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Louisiana Resident Infected with Rare 'Brain-Eating' Amoeba Tied to Lake Swimming
State health officials said the infection is almost always fatal and urged providers to watch for symptoms after a rare exposure in warm freshwater.
On Wednesday, the Louisiana Department of Health confirmed a rare Naegleria fowleri infection in a state resident. Health officials believe the individual acquired the brain-eating amoeba while swimming in Lake Claiborne, located in Claiborne Parish.
Naegleria fowleri thrives in warm freshwater, growing best at temperatures up to 115°F. Fatal infection occurs when contaminated water rushes up the nose and reaches the brain.
The U.S. has recorded 180 known cases since 1937, with Louisiana reporting three. Symptoms typically appear about five days after exposure, progressing to severe headache, fever, seizures and coma.
State health officials issued a Health Alert Network advisory to healthcare providers on Tuesday to outline symptoms and reporting guidelines. The agency has not identified the patient or disclosed their condition.
Officials urge swimmers to keep their heads above water and use nose clips in warm freshwater. The infection cannot be spread by swallowing water or through person-to-person contact.