Flu vaccine is far and away the most underutilized.

The flu can definitely set you up for bacterial pneumonias.

Physicians who care for adults generally don't think about vaccines as much as pediatricians do, and adults think of vaccines as a kid thing.

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

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

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.

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