Today, we're going to be talking about the importance of vaccines amid the growing avian bird flu and measles spread with pediatrician and infectious disease expert Dr. Adam Ratner. Twenty-five years ago, measles was declared eliminated in the United States. It was a long-fought win for pediatricians and researchers and those who work in infectious diseases. Today, however, measles is back. And Dr. Ratner says the resurgence points to a larger, more significant problem for public health.