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

Pneumococcus is a fairly common cause of pneumonia and [raises the] risk of death in older adults.

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.

People are reticent to give a newborn the hepatitis B vaccine and often delay it.

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.

What really reinvigorated vaccines was Prevnar, the pneumococcal vaccine that prevents against meningitis and ear infections. Here was the first vaccine to cross the billion-dollar mark.