Politicization and tribalism, obviously.

> people don't trust these vaccines

There are traditional anti-vaxxers of the "my body is my temple" ilk: Organic food, often vegan or vegetarian, against all vaccines and with an often bizarre notion of what is a "chemical" or not. Usually super fit. No one is surprised when these people are against COVID vaccines as it's consistent with everything else they stand for.

But there is a whole new army of anti-vaxxers who don't care what they eat, vape, smoke, or whether they or their children are standing in a plume of diesel exhaust 24/7. Often very unhealthy. They've never had the slightest concern or attention for any vaccine or medication, including novel, experimental medications (including those which they'll eagerly accept when they get COVID). New vaccines like the HPV vaccine, or yearly flu vaccine changes that have whatever random assortment of other ingredients, have never been of any concern or earned even a moment of their concern.

But suddenly they have very specific thoughts about this vaccine? Come on. And if it's the scary "changes your DNA" (but actually doesn't) bit, there are alternative, less effective more traditional vaccines which they also refuse.

It's tribalism. Early on their group ("conservatives") took some positions about responding to COVID -- anti-masking, anti-lockdowns, etc -- and that cemented into positions that somehow morphed into being anti-vaccine (basically anti anything seen as controlling or responding to COVID), despite there being literally nothing from a values or political perspective that would explain it (indeed, there are loads of classic conservative tenets that would directly oppose this anti-vax position). Then loads of people realized they could grift off of exploiting this divide, politicians -- most of whom are vaccinated -- saw an opening to pander, etc.

It is baffling and needs to be studied in depth. Tens to hundreds of millions of people could self-destructively be turned against something simply because they saw it as outside their tribe and messaging.