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Post-infectious encephalomyelitis associated with St. Louis encephalitis virus infection
James J Sejvar1, Amy V Bode, Michael Curiel
1Division of Viral and Rickettsial Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road, MS A-39, Atlanta, GA 30333, USA. zea3@cdc.gov
Neurology
|November 10, 2004
Summary
Neurologic illness can occur after St. Louis encephalitis virus infection. This case suggests immune-mediated encephalomyelitis may develop post-infection, even after mild illness.
Area of Science:
- Neurology
- Infectious Diseases
- Immunology
Background:
- St. Louis encephalitis virus (SLEV) is a flavivirus known to cause acute neurologic illness, including meningitis and encephalomyelitis.
- Post-infectious immune-mediated neurologic complications following flavivirus infections are rare.
- Typical presentations include acute aseptic meningitis, encephalomyelitis, and poliomyelitis-like syndromes.
Observation:
- A case report details a woman who developed neurologic symptoms after a recent SLEV infection.
- The patient experienced apparent post-infectious encephalomyelitis.
- The initial flavivirus illness was clinically mild.
Findings:
- This case suggests a potential link between SLEV infection and the development of post-infectious encephalomyelitis.
- Neurologic manifestations may occur in the period following the acute phase of flavivirus infection.
- Immune-mediated mechanisms could underlie these delayed neurologic events.
Implications:
- Flavivirus infections, including SLEV, may have delayed neurologic consequences beyond the acute phase.
- Recognizing post-infectious syndromes is crucial for accurate diagnosis and management of flavivirus-related neurologic disease.
- Further research is needed to understand the mechanisms and incidence of post-infectious neurologic complications from flaviviruses.