We have a sort of famous person in the Netherlands of 39y/o, he vlogged from his bed on a breather about his past 8 days of almost dying. That did a lot for awareness in my country I feel.
People haven't been hammered with it because it's background cultural knowledge that's never really questioned. I've never met anyone below the age of 60 who acted even a tiny bit scared of the flu, except for a few people who've personally had a severe case before and parents with very young children.