The part about fear of diseases, for example. We've always feared diseases, and the fear was due to having seen babies or young people die of diseases that have now almost disappeared, such as measles.

People that think they know better, however, have lost this fear and are responsible of the failure to establish herd immunity, and of the occasional deaths of immunodepressed or just unlucky people due to preventable diseases.

You seem to be responding to something I didn't say.

I only said that demand for any preventive measures against X, can be artificially inflated by injecting fear of X into the populace.

Since vaccines are a preventive measure, this is applicable to vaccines as well.