In 2012, the flu vaccine covered three of the most common flu strains. This year, the vaccine has had a fourth strain added.
Jocelyn Bratt, a nurse practitioner for Promedica says, "The fourth strain is another strain of type-B. Currently there is two type-A's and one type-B."
Some people, like Dan Seemann, aren't worried about getting their shot just yet.
"They talk October or November is when you should get it. Especially for the geezers," he says.
But medical personnel say the sooner, the better. The Center for Disease Control recommends the vaccine as soon as it's available, and it's available now.
For the "geezers," as Dan put it, the vaccine is available in a high dose form, for ages 65-and-up.
There is also a pediatric version for young children.
Amy Brenneman is a nurse, and she says she will get vaccinated because she is around sickness all the time. She says she feels more susceptible to getting the flu.
However, she may not choose get it for her children.
"I'm not real sure about how I feel about my kids getting it right now," says Amy.
Healthcare professionals say it's important for the high-risk groups to get the flu shot because the elderly can really get a bad outcome from the flu if they get it.
If you do get the vaccine annually, or decided that you will get it this year, you can do so as of right now.
It's also important to know that the vaccine, in shot form, does not administer a live virus, however the mist does. It takes about two weeks for the vaccine to take effect.