This ‘super flu’ could cause widespread serious illness, experts say Northeastern Global NewsHow long is flu contagious? What to know as influenza spreads ahead of holidays NBC 5 ChicagoNew flu strain putting severe pressure on healthcare across Europe, says WHO The GuardianFlu season is ramping up, and some experts are “pretty worried” CBS NewsFlu, RSV numbers rising: Here are the symptoms and how to protect yourself AL.com