An 8-year-old girl from Ruston, in northern Louisiana, died after contracting a rare and nearly always fatal infection caused by the microscopic amoeba Naegleria fowleri—commonly known as the “brain-eating amoeba.” Lilyan Smart passed away over the weekend at a hospital, just days after her eighth birthday, according to her family.
A Tragic Timeline
In a heartfelt Facebook post, Lilyan’s family shared: “Last night, Lilyan left our arms and went into the arms of Jesus. The damage to her brain was too severe for her little body to recover.” Earlier, they had reported she developed severe cerebral edema—a dangerous swelling of the brain—as a result of the infection.
Possible Exposure in Lake Claiborne
The Louisiana Department of Health announced last week that a local resident likely became infected with Naegleria fowleri while swimming in Lake Claiborne, located about 30 miles northwest of Ruston. While officials did not publicly name the patient, friends and relatives confirmed to local media that it was Lilyan.
How the Infection Occurs
Naegleria fowleri thrives in warm, freshwater environments—such as lakes, rivers, and hot springs. It does not cause illness when swallowed, nor is it contagious from person to person. Instead, infection occurs when water containing the amoeba enters the body through the nose—often during activities like diving or jumping into water—and travels up the olfactory nerve to the brain.
Extreme Rarity, Extreme Severity
According to Louisiana health authorities, only 180 confirmed cases have been reported across the United States since 1937, with just three occurring in Louisiana during that time. Most cases have historically occurred in southern and central U.S. states where summer water temperatures are highest. However, recent research suggests climate change and rising water temperatures may expand the geographic range where the organism can survive—including parts of the Midwest and even more northern regions.
Symptoms and Rapid Progression
As outlined by the U.S. Centers for Disease Control and Prevention (CDC), early symptoms typically appear around five days after exposure and may include headache, fever, nausea, and vomiting. The infection progresses quickly, often leading to stiff neck, confusion, hallucinations, loss of balance, and coma. Lilyan was admitted to the intensive care unit the previous week after initially developing a fever, which later progressed to double vision—a neurological sign consistent with advancing brain involvement. Without prompt, aggressive treatment, the disease can lead to death within one to two weeks.