WATCH: Experts raise concerns flu could reach epidemic levels

ABC News -

ABC News—Dr. Daniel B. Jernigan, director of the influenza division at the CDC, tells "GMA" the latest on the flu outbreak and what people should do to protect themselves.

Flu reaches epidemic levels in parts of UK as Japanese strain dominates. Flu has reached epidemic levels in some parts of the UK with the “Japanese” strain now dominant after the NHS failed to vaccinate against it, official figures show.