Recent Occurrence, Diversity, and Candidate Vaccine Virus Selection for Pandemic H5N1: Alert Is in the Air.

Vaccines (Basel)

Centro BioIndustrial, Instituto Butantan and Fundação Butantan, São Paulo 05503-900, SP, Brazil.

Published: September 2024

AI Article Synopsis

  • * The virus has evolved from the A/Goose/Guangdong/1/96 lineage, adapting to infect other species, including potential mammal-to-mammal transmission.
  • * Public health agencies view H5N1 as a significant pandemic threat, prompting research into hemagglutinin sequences to aid in developing effective vaccines for potential outbreaks.

Article Abstract

The prevalence of the highly pathogenic avian influenza virus H5N1 in wild birds that migrate all over the world has resulted in the dissemination of this virus across Asia, Europe, Africa, North and South America, the Arctic continent, and Antarctica. So far, H5N1 clade 2.3.4.4.b has reached an almost global distribution, with the exception of Australia and New Zealand for autochthonous cases. H5N1 clade 2.3.4.4.b, derived from the broad-host-range A/Goose/Guangdong/1/96 (H5N1) lineage, has evolved, adapted, and spread to species other than birds, with potential mammal-to-mammal transmission. Many public health agencies consider H5N1 influenza a real pandemic threat. In this sense, we analyzed H5N1 hemagglutinin sequences from recent outbreaks in animals, clinical samples, antigenic prototypes of candidate vaccine viruses, and licensed human vaccines for H5N1 with the aim of shedding light on the development of an H5N1 vaccine suitable for a pandemic response, should one occur in the near future.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11435632PMC
http://dx.doi.org/10.3390/vaccines12091044DOI Listing

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