← Back to guidelines
Infectious Disease2 papers

Influenza caused by seasonal influenza virus

Last edited: 4/10/2026

Overview

Influenza is a contagious respiratory illness caused by seasonal influenza viruses that can lead to severe disease 1. Children under 15 years, particularly those under 5, have the highest incidence rates and hospitalization rates comparable to individuals aged 65 and older 1. Children are also primary transmitters of the infection 1.

Diagnosis

  • No diagnostic criteria or recommended tests are mentioned in the provided abstracts.
  • Management

  • No management strategies or treatments are mentioned in the provided abstracts.
  • Special Populations

  • Pediatrics:
  • * Systematic vaccination is recommended for children aged 6-59 months 1. * Vaccination is recommended for children and adolescents belonging to risk groups 1. * From 2 years of age, the intranasal attenuated vaccine is preferred due to acceptability and coverage 1. * Vaccination of healthy children and adolescents aged 5-18 years is advisable for individual, family, and community protection 1.
  • Healthcare Professionals:
  • * Vaccination against influenza is especially important for all healthcare professionals 1.
  • Pregnancy:
  • * Vaccination against influenza is important for pregnant individuals 1.

    Key Recommendations

  • Systematic vaccination against seasonal influenza is recommended for children aged 6-59 months 1. (Evidence: Expert opinion)
  • Vaccination against seasonal influenza is recommended for children and adolescents belonging to risk groups 1. (Evidence: Expert opinion)
  • Vaccination against seasonal influenza is recommended for people who can transmit the flu to groups at risk of complicated flu, and household contacts or close family of infants under 6 months 1. (Evidence: Expert opinion)
  • Vaccination against influenza is especially important for all healthcare professionals 1. (Evidence: Expert opinion)
  • Vaccination against influenza is advisable for healthy children and adolescents aged 5-18 years 1. (Evidence: Expert opinion)
  • References

    1 Álvarez Aldeán J, Álvarez García FJ, Garcés-Sánchez M, Garrote Llanos E, Iofrío de Arce A, Navarro Gómez ML et al.. Vaccination against seasonal flu in childhood and adolescence. Recommendations of the Advisory Committee on Vaccines and Immunizations of the Spanish Association of Pediatrics (CAV-AEP) for the 2024-2025 season. Anales de pediatria 2024. link 2 Zhang R, Li Y, Bi P, Wu S, Peng Z, Meng Y et al.. Seasonal associations between air pollutants and influenza in 10 cities of southern China. International journal of hygiene and environmental health 2023. link

    Original source

    1. [1]
      Vaccination against seasonal flu in childhood and adolescence. Recommendations of the Advisory Committee on Vaccines and Immunizations of the Spanish Association of Pediatrics (CAV-AEP) for the 2024-2025 season.Álvarez Aldeán J, Álvarez García FJ, Garcés-Sánchez M, Garrote Llanos E, Iofrío de Arce A, Navarro Gómez ML et al. Anales de pediatria (2024)
    2. [2]
      Seasonal associations between air pollutants and influenza in 10 cities of southern China.Zhang R, Li Y, Bi P, Wu S, Peng Z, Meng Y et al. International journal of hygiene and environmental health (2023)

    HemoChat

    by SPINAI

    Evidence-based clinical decision support powered by SNOMED-CT, Neo4j GraphRAG, and NASS/AO/NICE guidelines.

    ⚕ For clinical reference only. Not a substitute for professional judgment.

    © 2026 HemoChat. All rights reserved.
    Research·Pricing·Privacy & Terms·Refund·SNOMED-CT · NASS · AO Spine · NICE · GraphRAG