Vaccines are not traditionally big money makers. They're given once or a few times in one's life, so they're never going to be blockbusters.

For most mothers, vaccinations become a matter of faith - faith in pharmaceutical companies, faith in public health officials - and I think there's been an erosion of faith.

Your child can die from chickenpox.

Flu vaccine is far and away the most underutilized.

The flu can definitely set you up for bacterial pneumonias.

When you're in the womb, you're in a sterile environment. When you enter the birth canal and the world, you're not. Very quickly, you have, living on the surface of your body, trillions of bacteria, literally trillion.

If you've had a cough that lasted weeks, a cough that just doesn't seem to go away, chances are it was pertussis.