On Thursday, vaccine maker Moderna announced that its flu shot, mRNA-1010, aka mFLUSIVA, had earned approval for use in all adults ages 50 and up. The approval announcement follows a unanimous vote by FDA advisors in June to approve the vaccine. Kennedy is also openly hostile to mRNA vaccines, having called the mRNA COVID-19 vaccine the “deadliest vaccine ever made” and canceling hundreds of millions of dollars’ worth of federal research grants for mRNA technology. Prasad defended his decision by arguing that the company didn’t compare its mRNA vaccine’s efficacy to the correct existing vaccine. But Moderna firmly and publicly pushed back, noting that FDA officials previously signed off on its trial designs.