It might be controversial, but I think people have legitimate reasons to not trust public health authorities. They have had to fess up in the past after years of misleading people about a number of things, from tobacco, sugar, alcohol, cannabis, … The Spanish flu is only called “Spanish” because Spain was the only country willing to acknowledge it during war time. It didn’t help also that more recently, the White House admitted to lying about the lack of need of face masks at the very beginning of the COVID pandemic, because they didn’t want people to take them away from hospital workers who needed them.

So with that, I understand why people will want to be selective about what public health guidelines they’ll choose to trust and not trus.

Add to that, that getting a vaccine shot is unpleasant. And consoling your baby after they got vaccinated is even more unpleasant. From there, you can understand the mental shortcut that some people make, choosing to ignore the proven impressive track record of vaccines to limit or even eradicate contagion of some diseases, and all of a sudden, all vaccines are a lie.