Organisms

Influenza B virus

Species of the genus BETAINFLUENZAVIRUS that cause HUMAN INFLUENZA and other diseases primarily in humans. Antigenic variation is less extensive than in type A viruses (INFLUENZA A VIRUS) and consequently there is no basis for distinct subtypes or variants. Epidemics are less likely than with INFLUENZA A VIRUS and there have been no pandemics. Previously only found in humans, Influenza B virus has been isolated from seals which may constitute the animal reservoir from which humans are exposed.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Species of the genus BETAINFLUENZAVIRUS that cause HUMAN INFLUENZA and other diseases primarily in humans. Antigenic variation is less extensive than in type A viruses (INFLUENZA A VIRUS) and consequently there is no basis for distinct subtypes or variants. Epidemics are less likely than with INFLUENZA A VIRUS and there have been no pandemics. Previously only found in humans, Influenza B virus has been isolated from seals which may constitute the animal reservoir from which humans are exposed.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

7 entry terms
  • FLUBV
  • Human Influenza B Virus
  • Influenza Viruses Type B
  • Influenza virus type B
  • Orthomyxoviruses Type B
  • Influenza B viruses
  • Betainfluenzavirus influenzae

MeSH Record

Aspects Covered

13 allowable subheadings

Indexed with the subheadings chemistry, classification, drug effects, enzymology, genetics, growth & development, immunology, isolation & purification, metabolism, pathogenicity, physiology, radiation effects, ultrastructure.

MeSH Record

Indexing Annotation

infection: coordinate IM with INFLUENZA, HUMAN (IM) in humans or ORTHOMYXOVIRIDAE INFECTIONS (IM) in animals; BETAINFLUENZAVIRUS is also available

MeSH Record

History Note

97; was ORTHOMYXOVIRUSES TYPE B 1985-96

MeSH Record

Previous Indexing

  • Orthomyxoviridae (1981-1984)

MeSH Hierarchy

Tree Number

  1. B04w.820w.480w.968w.407.410

AMA Style

References

  1. National Library of Medicine. Influenza B virus. Medical Subject Headings (MeSH). 2026. Unique ID D009981. http://id.nlm.nih.gov/mesh/2026/D009981
  2. Influenza B virus. In: Wikidata. https://www.wikidata.org/wiki/Q1089532