Flu season is off to an early start this year, and health experts warn it could be a bad one.

The normal flu season usually begins in January, causing nation-wide outbreaks of fevers, body aches, sore throats, and congestion.

Many people object to getting the flu vaccine. CBN News Medical Reporter Lorie Johnson explains the controversy and more.

But according to the Centers for Disease Control and Prevention, at least five states are already reporting widespread flu.

"Fortunately, the cases have been relatively mild," said Dr. Henry Wang, an emergency medicine physician at the University of Alabama at Birmingham.

This is the earliest flu season in a decade. But the CDC said there is good news: more than a third of Americans have already been vaccinated.

Flu vaccinations are recommended for everyone six months or older.