[superkuh]

As someone that has been preparing for an influenza pandemic since 2005 I can tell you that the yearly tri or tetra valent influenza vaccines each year are often, in the last decade mostly, down near 50% protective. And you don't get 2 influenza shots.

This is not something new or special. And people being ignorant should not change how things are properly done. Yes, they're going to freak, but it's because they're idiots. Don't base behavior on what they think. Accomidating them will not change their behavior at all. Their behavior does not reflect external realities.