[Clinical characteristics of children hospitalized for influenza virus infection]

N Arostegi Kareaga1, M Montes, E G Pérez-Yarza

  • 1Servicio de Pediatría, Hospital Donostia, San Sebastián, Spain. arostegi@chdo.osakidetza.net

Insights

Influenza virus infection in hospitalized children often presents with nonspecific symptoms, particularly in infants under six months. Early diagnosis requires specific testing, as healthy infants under 24 months are most vulnerable.

Area of Science:

  • Pediatric Infectious Diseases
  • Virology
  • Epidemiology

Context:

  • Influenza virus infections present with nonspecific symptoms, mimicking other serious conditions in neonates.
  • Limited research exists on the clinical characteristics of influenza in hospitalized children.

Purpose:

  • To evaluate the clinical characteristics of children hospitalized with influenza virus infection.
  • To analyze data from four consecutive influenza epidemic waves (2000-2004).

Summary:

  • Eighty-four children were hospitalized, predominantly with influenza A (H3N2).
  • Common symptoms included fever, cough, and ENT involvement, with febrile syndrome being the most frequent admission reason.
  • Infants under six months represented 42.8% of cases; pneumonia and prolonged fever were more common in older children.

Impact:

  • Identifies previously healthy neonates with nonspecific symptoms as the most affected group.
  • Highlights the need for specific microbiological diagnostic techniques for early influenza diagnosis in children.
  • Determines that healthy infants under 24 months are at the highest risk for influenza-related hospitalization.
Abstract

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