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Descriptor English: Influenza B virus
Descriptor Spanish: Virus de la Influenza B
Descriptor virus de la gripe B
Entry term(s) orthomixovirus tipo B
virus de la gripe tipo B
virus de la influenza B
virus de la influenza tipo B
Scope note: Especie del género INFLUENZAVIRUS B que produce INFLUENZA y otras enfermedades principalmente en el hombre. La variación antigénica es menor que entre los virus del tipo A (VIRUS DE LA INFLUENZA A) y por consiguiente no hay base para diferentes subtipos o variantes. Las epidemias son menos probables que con el VIRUS DE LA INFLUENZA A y no han producido pandemias. Previamente sólo se había aislado del hombre pero ya se ha aislado de las focas que pueden constituir el reservorio al que está expuesto el hombre.
Descriptor Portuguese: Vírus da Influenza B
Descriptor French: Virus influenza B
Entry term(s): Influenza B viruses
Influenza Viruses Type B
Orthomyxoviruses Type B
Tree number(s): B04.820.480.968.407.410
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D009981
Scope note: Species of the genus INFLUENZAVIRUS B 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.
Annotation: infection: coordinate IM with INFLUENZA, HUMAN (IM) in humans or ORTHOMYXOVIRIDAE INFECTIONS (IM) in animals; INFLUENZAVIRUS B is also available
Allowable Qualifiers: CH chemistry
CL classification
DE drug effects
EN enzymology
GD growth & development
GE genetics
IM immunology
IP isolation & purification
ME metabolism
PH physiology
PY pathogenicity
RE radiation effects
UL ultrastructure
Previous Indexing: Orthomyxoviridae (1981-1984)
Public MeSH Note: 97; was ORTHOMYXOVIRUSES TYPE B 1985-96
History Note: 97; was ORTHOMYXOVIRUSES TYPE B 1985-96
DeCS ID: 10159
Unique ID: D009981
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1985/01/01
Date of Entry: 1984/04/06
Revision Date: 2015/06/22
Influenza B virus - Preferred
Concept UI M0015476
Scope note Species of the genus INFLUENZAVIRUS B 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.
Preferred term Influenza B virus
Entry term(s) Influenza B viruses
Influenza Viruses Type B
Orthomyxoviruses Type B



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