That will require inoculating the population against propaganda.
When I was a school-goer in the 70's, 80's, and 90's they used to teach that and basic critical thinking and research skills in "Current Events", "Civics", and "History" classes here in the U.S. too, but it seems to have gone away in more recent decades. Pretty sure that "social media" destroyed a lot of that in the adult population, too (for those who even had those skills to lose in the first place). :(
Come to think of it, similar to normal vaccinations I guess.
None of what is going on is really a vaccination though, it’s a real infection.