The strange reason flu shots have been so hard to improve - vox.com

The strange reason flu shots have been so hard to improve  vox.comNew kind of flu shot is on the way as the FDA approves Moderna's mRNA-based vaccine  PBSHere’s what the first mRNA flu vaccine could mean for flu season  Science NewsA new flu vaccine geared to older people is coming soon  NPRFirst mRNA flu shot approved by FDA bodes well for improving drugs of the future – though a few hurdles remain before mRNA can move beyond vaccines &nb