Known for his anti-vaccination stance, the new US Secretary of Health is facing his first challenge: Curbing the mainly Texas ...

Arizona hasn't had a reported measles case so far this year, but red flags are leading some experts to worry we could see an ...

A recent outbreak of measles is prompting questions about the life-threatening disease and how to prevent it. Here's what to ...

Dr. Mallika Marshall answers a viewer question on whether a new MMR vaccine is needed for a 76-year-old. Posted: March 5, ...