F.D.A. Refuses to Review Moderna Flu Vaccine NYT: Science By:Christina Jewett and Rebecca Robbins 10 February 2026 at 21:49 The vaccine makerβs shots involve the successful Covid vaccinesβ RNA technology. Health Secretary Robert F. Kennedy Jr. has broadly rejected it, canceling millions of dollars in research projects. Β© Brian Snyder/ReutersModerna is a pioneer in using mRNA technology, first with the Covid vaccine. Its flu shot was being developed for people 50 and older.