Seth Berkley

Now, when you get a viral infection, what normally happens is it takes days or weeks for your body to fight back at full strength, and that might be too late. When you're pre-immunized, what happens is you have forces in your body pre-trained to recognize and defeat specific foes. So that's really how vaccines work.

I remind everyone: Whether you school them at home or send them to school, you as a parent have the responsibility to make sure they learn and behave. Teachers and principals may help, but parents are the ones who must accept responsibility.