It's a problem that seems to be a lot like climate change:

It will be hard to objectively tell if we overreacted, because the actions taken cause a lower impact than predicted.

But on the other hand, it will be pretty easy to tell if we underreacted: a catastrophe worse than projected would mean we didn't take enough action.

It's so easy to be skeptical when the data is inconsistent - but it's important to be open to new information and work to protect your community to the best of your knowledge and ability.