Capless self-amplifying mRNA vaccine induces dose-sparing protective immunity against HPAI clade 2.3.4.4 H5 virus in mice.
Self-amplifying mRNA (samRNA) vaccines can induce potent immune responses at lower doses than conventional non-replicating mRNA vaccines; however, large RNA size and manufacturing considerations associated with 5' capping remain important challenges. Here, we developed a capless samRNA (CLsamRNA) vaccine platform deriv...