Norovirus cases explode across US in worst outbreak in years. Doctor reveals simple daily habits that stop the stomach bug from spreading in your home.

Polio is not endemic in the United States, but the disease is circulating in 30 other countries now. A doctor explains how to protect against polio when traveling.

Practitioners nationwide are striving to do what’s best for children’s health, while staying supportive in the face of mistrust and confusion.