>>even if the other side is to blame, we shouldn’t focus on that until we solve the problem?

Exactly! That is what is meant by not letting polarized politics drive the issue. We shouldn't care what 'side' is doing what, we should be focused on preventing an epidemic. Personally, IDGAF about assigning blame to any side, I'd rather that the petty bickering is dropped and effective measures are taken.

I realize the climate in the US isn't conducive to this, but assigning blame doesn't fix anything. Rather than blaming people, effective steps need to be taken. Focusing on assigning blame just puts the other side on the defensive; which is counterproductive to the kind of cooperation that will be needed to effectively respond to this crisis.