A 4-year-old girl in Iowa who didn’t get vaccinated this season was left blind after getting the flu — and her parents said doctors don’t know if she will ever see again, NBC News reported. Jade DeLucia’s mother took her to the hospital on Christmas Eve when her fever became dangerously high. She spent more than two weeks in...

The flu continues to spread across the U.S., with elevated activity in nearly every state. On Friday, the Centers for Disease Control and Prevention reported widespread flu in 30 states — mostly on the West Coast, along the southern border, and in the Mid-Atlantic states. The CDC estimates there have been at least 3.7 million flu cases so far this...