The agency had initially refused to even review the application but reversed course after a public outcry.
The Food and Drug Administration on Wednesday approved the first mRNA flu vaccine, enabling use of a technology that will make it easier to rapidly target a widely prevalent or particularly virulent strain of the virus.
The approval of the vaccine, called mFLUSIVA, which is manufactured by Moderna, follows a series of blows to mRNA research directed by Health Secretary Robert F. Kennedy Jr., including the cancellation of 22 projects meant to develop vaccines with mRNA technology through the government’s Biomedical Advanced Research and Development Authority.


