An experimental vaccine provided broad protection against all 20 known influenza A and B virus subtypes in initial tests in mice and ferrets, potentially opening a pathway to a universal flu shot that could prevent future pandemics, according to a U.S. study published on Thursday.
The two-dose vaccine uses the same messenger RNA mRNA technology used in the COVID 19 shots developed by Pfizer with BioNTech and Moderna. It delivers tiny lipid particles containing mRNA instructions for cells to create replicas of so-called hemagglutinin proteins that appear on influenza virus surfaces.
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