It is possible to create an mRNA flu vaccine that encodes several different types of proteins, and instead of tri- or quadrivalent (protection from 3 or 4 strains), they could be decavalent (10 strains) or greater. Ben Locwin outlined one of the most important in an email to ACSH: There are several reasons why this approach would be a significant step forward vaccine expert Dr. Like the existing COVID vaccines, mRNA flu shots would contain genetic instructions for making certain antigens, priming your immune system to neutralize those proteins when they’re attached to the circulating flu strains that can make you sick. Credit: Oliver Bunic/Bloomberg/Getty Images mRNA to the rescue? A laboratory technician injects Influenza A (H1N1) virus into a tray of embryonated hens’ eggs. The CDC couldn’t give an estimate for 2020-2021 because of low influenza virus circulation, but vaccine efficacy was just 39 percent in the 2019-2020 flu season. (The “H” is the letter found in the strain names, H3N1, etc.)Ī July 2021 study found that the recombinant vaccine may provide better protection, measured as antibody-mediated immunity against HA, compared to its egg- and cell-based counterparts, though none of the shots were especially impressive. The latter requires neither eggs nor animal cells it contains the DNA for a surface protein called hemagglutinin (HA) found on influenza viruses. The FDA has also approved a live attenuated influenza vaccine nasal spray made by a different manufacturing process, as well as a recombinant (“GMO,” you could say) vaccine. Since 2012, CVVs have also been grown in cultured animal cells, reducing our dependence on eggs for vaccine production. Is the Genetic Literacy Project a corporate ‘front’? GLP responds to ongoing false allegations from US Right to Know / Organic Consumers Association / SourceWatch / Baum Hedlund / Church of ScientologyĪccording to the CDC, we’ve made vaccines the same way for 70 years. Researchers grow and replicate “candidate vaccine viruses” (CVV) in chicken eggs, harvest and kill the viruses, then purify the antigens that will go into seasonal flu shots.GLP Integrity Policies: Privacy, Conflicts of Interest, Verification, Fact-Checking Standards and Corrections.Mission, Financial Transparency and Governance.
0 kommentar(er)
