Whooping cough and walking pneumonia cases are up. Here's what to know and how to help keep your family safe.

Health officials are warning about the rise of multiple infections this season — especially among school-aged children — including whooping cough and walking pneumonia.

According to the Centers for Disease Control and Prevention, there have been about four times as many cases of whooping cough this year compared to last year. 

On "CBS Mornings Plus" Tuesday, CBS News chief medical correspondent Dr. Jon LaPook explained that whooping cough is especially dangerous because of the small airways of infants and young kids.