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Is a Universal Influenza Virus Vaccine Possible?

08:00 EDT 10th October 2019 | BioPortfolio

Summary of "Is a Universal Influenza Virus Vaccine Possible?"

Influenza viruses remain a severe burden to human health because of their contribution to overall morbidity and mortality. Current seasonal influenza virus vaccines do not provide sufficient protection to alleviate the annual impact of influenza and cannot confer protection against potentially pandemic influenza viruses. The lack of protection is due to rapid changes of the viral epitopes targeted by the vaccine and the often suboptimal immunogenicity of current immunization strategies. Major efforts to improve vaccination approaches are under way. The development of a universal influenza virus vaccine may be possible by combining the lessons learned from redirecting the immune response toward conserved viral epitopes, as well as the use of adjuvants and novel vaccination platforms. Expected final online publication date for the , Volume 71 is January 27, 2020. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Name: Annual review of medicine
ISSN: 1545-326X
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Medical and Biotech [MESH] Definitions

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.

Membrane glycoproteins from influenza viruses which are involved in hemagglutination, virus attachment, and envelope fusion. Fourteen distinct subtypes of HA glycoproteins and nine of NA glycoproteins have been identified from INFLUENZA A VIRUS; no subtypes have been identified for Influenza B or Influenza C viruses.

Vaccines used to prevent infection by viruses in the family ORTHOMYXOVIRIDAE. It includes both killed or attenuated vaccines. The composition of the vaccines is changed each year in response to antigenic shifts and changes in prevalence of influenza virus strains. The vaccine is usually bivalent or trivalent, containing one or two INFLUENZAVIRUS A strains and one INFLUENZAVIRUS B strain.

A subtype of INFLUENZA A VIRUS with the surface proteins hemagglutinin 7 and neuraminidase 9. This avian origin virus was first identified in humans in 2013.

A subtype of INFLUENZA A VIRUS that is highly virulent in poultry and wild birds, but shows varying degrees of pathogenicity in mice. The H5N8 virus subtype has a polybasic amino acid motif at the HA cleavage site which explains its pathogenicity in birds, and expresses surface proteins HEMAGGLUTININ 5 and NEURAMINIDASE 8 which are typical of Highly Pathogenic Avian Influenza viruses.

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