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West Nile fever encephalitis.

E Flatau, D Kohn, O Daher

    Israel Journal of Medical Sciences
    |November 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    West Nile virus can cause meningoencephalitis in young people, presenting with fever and headaches. This study highlights its potential prevalence in Israel, with patients experiencing a full recovery.

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    Area of Science:

    • Neurology
    • Infectious Diseases
    • Virology

    Background:

    • West Nile virus (WNV) is a mosquito-borne flavivirus that can cause neurological disease in humans.
    • Meningoencephalitis, an inflammation of the brain and meninges, is a severe manifestation of WNV infection.

    Observation:

    • Three young patients presented with symptoms suggestive of meningoencephalitis, including high fever, severe headaches, and meningeal irritation.
    • One patient exhibited additional signs of papillitis and a maculopapular rash.
    • Notably, lymphadenopathy, a common indicator of West Nile fever, was absent in all observed cases.

    Findings:

    • Cerebrospinal fluid analysis revealed elevated protein levels and pleocytosis, predominantly with polymorphonuclear cells, consistent with viral encephalitis.

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  • The illness duration ranged from one to two weeks, with all patients achieving complete recovery.
  • The clinical presentation and cerebrospinal fluid findings in these cases suggest West Nile encephalitis may be more common in Israel than previously thought.

    • Implications:

    • These findings underscore the importance of considering West Nile encephalitis in the differential diagnosis of acute neurological illness in young individuals, particularly in regions where WNV is endemic.
    • The absence of lymphadenopathy in these cases broadens the clinical spectrum of West Nile fever, emphasizing the need for vigilant diagnosis.
    • Further epidemiological studies are warranted to determine the true prevalence of West Nile encephalitis in Israel and surrounding areas.