I wouldn't say it's ignorance, or history repeating itself (maybe it is). Even so, Brazil has more % of their population with full vaccinated than a lot of "more educated countries", I think they're one of the top countries with more people vaccinated. It's really a difficult subject.

And I don't think it's about education or what ever. People just trust their doctors (or science) in most places, there's respect for them. There's also respect for authorities in a time of crisis. I'm pretty sure most of us don't how a vaccine works, yes I can repeat the fragment from a textbook and tell you something about antibodies lymphocytes or whatever. It's just a social problem, religion, politics, conspiracists, "dont tread on me", freedom speech, and more ideologies are all entangled in this.

Sometimes extremism (forcing to take the vaccine) leads to other kind of extremism (refusing to take it). Then some may start calling those who don't take the vaccine ignorant...

Okay this is getting too long... . I'm not saying education isn't one of the solutions (But what kind of education?) :)