MeSH Browser

MeSH Heading: Influenza A virus
Tree Number(s): B04.820.480.968.405.400
Unique ID: D009980
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D009980
Annotation: infection: coordinate IM with INFLUENZA, HUMAN (IM) in humans or ORTHOMYXOVIRIDAE INFECTIONS (IM) in animals other than birds; infection in birds = INFLUENZA IN BIRDS; ALPHAINFLUENZAVIRUS is also available
Scope Note: The type species of the genus ALPHAINFLUENZAVIRUS that causes influenza and other diseases in humans and animals. Antigenic variation occurs frequently between strains, allowing classification into subtypes and variants. Transmission is usually by aerosol (human and most non-aquatic hosts) or waterborne (ducks). Infected birds shed the virus in their saliva, nasal secretions, and feces.
Entry Term(s): Alphainfluenzavirus influenzae; Avian Orthomyxovirus Type A; FLUAV; Fowl Plague Virus; Human Influenza A Virus; Influenza Virus Type A; Influenza Viruses Type A; Myxovirus influenzae-A hominis; Myxovirus influenzae-A suis; Myxovirus pestis galli; Orthomyxovirus Type A; Orthomyxovirus Type A, Avian; Orthomyxovirus Type A, Human; Orthomyxovirus Type A, Porcine; Pestis galli Myxovirus
Related Numbers: txid2955291
NLM Classification #: QW 168.5.O7
Previous Indexing: Orthomyxoviridae (1968-1976)
Public MeSH Note: 1997; see ORTHOMYXOVIRUSES TYPE A 1977-1996; for ORTHOMYXOVIRUS TYPE A, HUMAN see INFLUENZA A VIRUS, HUMAN 1997-2005; for MYXOVIRUS INFLUENZAE-A HOMINIS see INFLUENZA A VIRUS 1974-2005; for ORTHOMYXOVIRUS TYPE A, AVIAN see INFLUENZA A VIRUS, AVIAN 1997-2005; for ORTHOMYXOVIRUS TYPE A, PORCINE see INFLUENZA A VIRUS, PORCINE 1995-2005
History Note: 1997 (1977)
Date Established: 1977/01/01
Date of Entry: 1976/04/27
Revision Date: 2023/07/27

Allowable Qualifiers: chemistry (CH)

classification (CL)

drug effects (DE)

enzymology (EN)

genetics (GE)

growth & development (GD)

immunology (IM)

isolation & purification (IP)

metabolism (ME)

pathogenicity (PY)

physiology (PH)

radiation effects (RE)

ultrastructure (UL)

Viruses [B04]
- RNA Viruses [B04.820]
  - Negative-Sense RNA Viruses [B04.820.480]
    - Orthomyxoviridae [B04.820.480.968]
      - Alphainfluenzavirus [B04.820.480.968.405]
        
        Influenza A virus [B04.820.480.968.405.400]
        
        Influenza A Virus, H10N7 Subtype [B04.820.480.968.405.400.105]
        
        Influenza A Virus, H10N8 Subtype [B04.820.480.968.405.400.106]
        
        Influenza A Virus, H1N1 Subtype [B04.820.480.968.405.400.214]
        
        Influenza A Virus, H1N2 Subtype [B04.820.480.968.405.400.216]
        
        Influenza A Virus, H2N2 Subtype [B04.820.480.968.405.400.250]
        
        Influenza A Virus, H3N2 Subtype [B04.820.480.968.405.400.300]
        
        Influenza A Virus, H3N8 Subtype [B04.820.480.968.405.400.350]
        
        Influenza A Virus, H5N1 Subtype [B04.820.480.968.405.400.500]
        
        Influenza A Virus, H5N2 Subtype [B04.820.480.968.405.400.505]
        
        Influenza A Virus, H5N6 Subtype [B04.820.480.968.405.400.552]
        
        Influenza A Virus, H5N8 Subtype [B04.820.480.968.405.400.598]
        
        Influenza A Virus, H7N1 Subtype [B04.820.480.968.405.400.690]
        
        Influenza A Virus, H7N2 Subtype [B04.820.480.968.405.400.692]
        
        Influenza A Virus, H7N3 Subtype [B04.820.480.968.405.400.694]
        
        Influenza A Virus, H7N7 Subtype [B04.820.480.968.405.400.700]
        
        Influenza A Virus, H7N9 Subtype [B04.820.480.968.405.400.800]
        
        Influenza A Virus, H9N2 Subtype [B04.820.480.968.405.400.900]

Influenza A virus Preferred

Concept UI: M0015475
Related Numbers: txid2955291
Scope Note: The type species of the genus ALPHAINFLUENZAVIRUS that causes influenza and other diseases in humans and animals. Antigenic variation occurs frequently between strains, allowing classification into subtypes and variants. Transmission is usually by aerosol (human and most non-aquatic hosts) or waterborne (ducks). Infected birds shed the virus in their saliva, nasal secretions, and feces.
Terms: Influenza A virus Preferred Term
Term UI T029541
Date01/01/1999
LexicalTag NON
ThesaurusID NLM (1977); Human Influenza A Virus
Term UI T001133181
Date02/23/2023
LexicalTag NON
ThesaurusID NLM (2024); Influenza Virus Type A
Term UI T001133182
Date02/23/2023
LexicalTag NON
ThesaurusID NLM (2024); FLUAV
Term UI T001133180
Date02/23/2023
LexicalTag ACR
ThesaurusID NLM (2024); Influenza Viruses Type A
Term UI T029539
Date04/26/1976
LexicalTag NON
ThesaurusID UNK (19XX); Orthomyxovirus Type A
Term UI T029540
Date10/18/1995
LexicalTag NON
ThesaurusID NLM (1997)

Orthomyxovirus Type A, Avian Narrower

Concept UI: M0015471
Terms: Orthomyxovirus Type A, Avian Preferred Term
Term UI T029522
Date10/18/1995
LexicalTag NON
ThesaurusID NLM (1997); Fowl Plague Virus
Term UI T029518
Date05/05/1976
LexicalTag NON
ThesaurusID UNK (19XX); Pestis galli Myxovirus
Term UI T029519
Date02/13/1990
LexicalTag NON
ThesaurusID NLM (1991); Myxovirus pestis galli
Term UI T029520
Date05/05/1976
LexicalTag NON
ThesaurusID UNK (19XX); Avian Orthomyxovirus Type A
Term UI T029521
Date02/12/1990
LexicalTag NON
ThesaurusID NLM (1991)

Orthomyxovirus Type A, Human Narrower

Orthomyxovirus Type A, Porcine Narrower

Alphainfluenzavirus influenzae Broader

Influenza A virus MeSH Descriptor Data 2025