Influenzavirus B
| Definition: |
A genus of the family ORTHOMYXOVIRUS causing INFLUENZA and other diseases primarily in humans. In contrast to INFLUENZAVIRUS A, no distinct antigenic subtypes of hemagglutinin (HEMAGGLUTINS) and NEURAMINIDASE are recognized. |
| Notes: |
infection: coord IM with ORTHOMYXOVIRIDAE INFECTIONS (IM) or INFLUENZA (IM); INFLUENZA B VIRUS is also available |
| Previously Indexed: |
Orthomyxoviridae (1997-2001) |
Influenzavirus B Categories.
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Influenza B virus - Species of the genus INFLUENZAVIRUS B that cause 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. |
Influenzavirus B Definitions and Terms
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