National health experts say swine flu vaccine will reach 100-million doses by the weekend.
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The Centers for Disease Control says right now it's not clear how the H1N1 virus will behave in the new year.
That's why the agency recommends everyone go out and get the shot.
There's an easy way to find out where and when you can get the swine flu vaccine.
The government created a web site where you plug your zip code into the flu vaccine locator and it brings up a list of where the seasonal and H1N1 flu shots are available and what time you can get them.
Flu vaccine finder website: http://flu.gov/