Now the CDC says the flu season may be peaking early.
Flu season typically peaks in late January or early February, but the CDC says flu rates are up 150% in some parts of the country compared to this time last year.
Vaccination continues to be the best defense against the flu.
Doctors say it takes about two weeks for the body to develop antibodies after the vaccination.
So if you haven't been vaccinated yet, now is the time to do so.
Dr. Susan Rehm with the Cleveland Clinic says, "Take the flu vaccine. The second take is to take personal measures like hand washing, staying out of crowds, and staying home when you're ill. The third take is to take prescription anti-viral medication if your healthcare professional recommends it."
Dr. Rehm says a majority of the cases seen this year are type A, which typically causes a sore throat, aches, pains and sometimes fever.
She adds, an easy way to tell if what you have is the flu is by how quickly symptoms appear.
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