So, let’s start from the idea that a certain vaccination compliance threshold is needed for each illness that we need to and have the ability to prevent.

And then let’s consider the reality that many parents—enough of them to matter—think there are too many vaccines, so compliance has been eroding.

This is the actual challenge: the medical recommendation might be solid, but a public policy doesn’t work unless people follow it.

Because eroded compliance threatens to undermine those critical thresholds, the public policy’s effectiveness is collapsing.

We can stay the course and watch things collapse, determined that the experts are correct and that the general public cannot be helped, or we can update the policy to be more focused so that we achieve those critical thresholds for the most essential immunizations.