A health care worker in New York prepares a Moderna vaccine. Michael M. Santiago/Getty ImagesEuropean regulators on April 21 cleared a combination vaccine made by Moderna that targets COVID-19 and influenza.Moderna’s messenger ribonucleic acid (mRNA) vaccine, mCombriax, is the first authorized combination flu–COVID shot after receiving clearance from the European Commission for individuals aged 50 and older.
