Does someone who opposes media-driven thinking (with supporting science to show why) about any one vaccine get lumped into "anti-vaxxers" in your mind? Because that all-or-nothing thinking fallacy is a key symptom of the problem.
If they have a factual basis for their views that's fine.
But in general I was talking about folks who have, for whatever reason, said things like "oh we're not vaccinating our children", meaning all vaccines.
The only thing it can really do is inform me what sort of bizarre misinformation they have bought into. Unlikely ever to repair the drop in my opinion.