The pharmacist (or tech) at a big-name drug store, when asked if the flu vaccine was 'traditional' or a new version incorporating MRNA, said that it was made the same way. When I commented that was good, as I've known a number of people who were fully vaxxed/boosted and still got COVID, at least once, and sometimes with severe symptoms, and because of that, I didn't have any confidence in the COVID vaxes. He agreed - emphatically (if indirectly).