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Updated: Jul 16, 2026

Neisseria meningitidis Infection of Induced Pluripotent Stem-Cell Derived Brain Endothelial Cells

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Primary amebic meningoencephalitis: a silent killer.

¹University of Texas Health Science Center at Houston, LBJ General Hospital, Houston, Texas 77026, USA.

|March 7, 2007

Summary

A 9-year-old boy contracted primary amebic meningoencephalitis from Naegleria fowleri after swimming. Despite treatment, the rare and lethal infection proved fatal, highlighting diagnostic and management challenges.

Area of Science:

Neurology
Infectious Diseases
Public Health

Background:

Primary amebic meningoencephalitis (PAM) is a rare but almost uniformly fatal infection of the central nervous system.
Naegleria fowleri is an opportunistic amebic pathogen commonly found in warm freshwater environments.
Recreational water exposure is a primary risk factor for Naegleria fowleri infection.

Observation:

A 9-year-old boy developed severe neurological symptoms including headache, vomiting, lethargy, and inability to ambulate following swimming in a man-made lake.
Clinical presentation rapidly progressed over a short period, indicating an acute and severe central nervous system insult.
Cerebrospinal fluid analysis confirmed the presence of Naegleria fowleri trophozoites and flagellates.

Findings:

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The patient was diagnosed with primary amebic meningoencephalitis caused by Naegleria fowleri.

Despite prompt and aggressive treatment with amphotericin B and rifampin, the patient succumbed to the infection.

The case underscores the rapid and devastating progression of Naegleria fowleri infections.

Implications:

Early recognition and diagnosis of Naegleria fowleri are critical for potential therapeutic intervention, although outcomes remain poor.
Public health awareness regarding the risks of freshwater swimming in endemic areas is essential for prevention.
This case highlights the need for continued research into more effective treatments for primary amebic meningoencephalitis.