"I think as we go in to January and February we will start to see our peaks," said Kelly VanBuskirk from the Tulsa Health Department. "Since we're getting ready to head into January, this is the time of year we start to see the numbers increase with influenza."
Doctors and nurses are encouraging everyone to get vaccinated.
They say the vaccine is especially important for pregnant women, the elderly and people with underlying health issues.
It is available for anyone, six months or older.
For more information on where you can receive the flu vaccine, click here .