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Exploring the Correlation Between Influenza A Virus (H3N2) Infections and Neurological Manifestations: A Scoping

Mithun K Reddy1, Jayashankar Ca2, Venkataramana Kandi3

  • 1Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND.

Cureus
|May 4, 2023
PubMed

Insights

Influenza A virus H3N2 can cause neurological issues, from headaches to severe encephalitis. Early detection and treatment of these influenza-associated neurological complications are crucial to prevent lasting harm.

Area of Science:

  • Neurology
  • Virology
  • Infectious Diseases

Background:

  • Influenza A virus (IAV), especially the H3N2 strain, commonly causes respiratory illness.
  • IAV infections can also lead to a spectrum of neurological complications.
  • These range from mild symptoms to severe conditions like encephalitis and acute necrotizing encephalopathy (ANE).

Purpose of the Study:

  • To discuss the correlation between the H3N2 influenza A virus variant and neurological manifestations.
  • To highlight the importance of prompt recognition and treatment of influenza-associated neurological complications.
  • To review potential mechanisms underlying IAV-induced neurological damage.

Main Methods:

  • Literature review of studies investigating influenza A virus and neurological complications.
  • Analysis of reported cases and proposed pathogenetic mechanisms.
  • Synthesis of current understanding regarding H3N2 and neurological sequelae.

Main Results:

  • The H3N2 IAV variant is associated with various neurological complications.
  • Neurological manifestations include encephalitis, febrile convulsions, and acute disseminated encephalomyelitis.
  • Potential mechanisms contributing to neurological involvement are discussed.

Conclusions:

  • Influenza A virus H3N2 poses a risk for neurological complications.
  • Timely diagnosis and management are essential to mitigate long-term consequences.
  • Further research into the mechanisms of influenza-associated neurological disease is warranted.
Keywords:
encephalitisfebrile convulsionsh3n2influenza a virusneurological manifestations

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