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West Nile Virus encephalitis in intensive care: a small mosquito, a tremendous danger

M Capuzzo1, D Cadorin, P Perna

  • 1University Section of Anaesthesiology and Intensive Care, Ferrara University Hospital, Ferrara, Italy. cpm@unife.it

Minerva Anestesiologica
|May 21, 2011
PubMed

Insights

West Nile virus (WNV) meningoencephalitis presents diagnostic challenges due to early flu-like symptoms and seasonality. Early diagnosis and management are crucial for improving patient outcomes.

Area of Science:

  • Neurology
  • Infectious Diseases
  • Public Health

Background:

  • West Nile virus (WNV) is a mosquito-borne flavivirus with potential neuroinvasive capacity.
  • Meningoencephalitis is a severe inflammation of the brain and meninges, often with significant morbidity and mortality.

Observation:

  • This report details two cases of WNV meningoencephalitis admitted to the Intensive Care Unit (ICU) in Ferrara, Italy.
  • Key diagnostic challenges included the typical late summer seasonality in Italy and initial non-specific flu-like symptoms (fever, myalgia, asthenia).
  • The use of corticosteroids in the patients' medical history was also noted as a potential confounding factor.

Findings:

  • WNV meningoencephalitis requires careful consideration, especially during peak transmission seasons.
  • Neurological impairment following initial flu-like symptoms is a critical indicator.
  • Steroid use may complicate the clinical picture and diagnosis.

Implications:

  • Enhanced surveillance and diagnostic awareness for WNV are necessary, particularly in regions with similar epidemiological patterns.
  • Prompt and accurate diagnosis is vital for appropriate patient management and potentially mitigating poor short-term and long-term outcomes.
  • Further research into the impact of steroid use on WNV meningoencephalitis presentation and prognosis is warranted.

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