As we set out to examine influenza on "Take Care," we wanted to start out with the basics. Flu is one of those illnesses that carries with it a lot of baggage in the form of myths and tall tales. After all, hasn't anyone ever told you that you can get the flu from the vaccine? (You can't.) Dr. Angela Campbell , medical officer in the influenza division of the CDC , joined us to share her insight into this year's flu virus and how to prevent contracting it.