New kind of flu shot is on the way as the FDA approves Moderna's mRNA-based vaccine AP NewsF.D.A. Approves Moderna's mRNA Flu Vaccine The New York TimesPa. experts welcome FDA approval of Moderna's mRNA flu vaccine TribLIVE.comFDA approves 1st mRNA flu shot, from Moderna NBC NewsU.S. missile stockpiles dwindle. And, FDA weighs approval of flu shots with mRNA tech