The US flu season has caused at least 33 million illnesses, 430,000 hospitalizations, and 19,000 deaths. Meanwhile, UK ...

One flu activity tracker said Mississippi was No. 1 in the country for influenza activity last week. What you need to know ...

Is it possible to get the flu twice in the same season? Experts share who is more likely to get reinfected and how to stay safe during this severe flu season.