As temperatures drop the flu spreads more quickly, but most Hoosiers still don't get vaccinated for the virus.
Indiana State Health Commissioner Dr. Jerome Adams says Indiana's vaccination rate is the 13th worst in the nation.
42.4% of adults ages 65 years and older did not have a flu vaccination in the past 12 months. For adults ages 18 years and over, 35.8% reported they had a flu vaccination in the past 12 months.
"There's not one major reason, it varies in different communities," Adams said. "Some people are worried about fears related to Autism which have not been founded. Other people are worried about the fact that the flu shot hurts."
For those who are uncomfortable with needles, Adams recommends the nasal spray, which he says is as effective as the traditional shot.
And to the point about lower temperatures leading to a more widespread influenza, Adams says it's true, but for different reasons than you might think.
"What happens when we get cold? We huddle inside, we huddle together, and it makes it easier to catch viruses and infections that travel person to person or through close contact," Adams said.
He says the Indiana State Department of Health recommends a three-pronged approach to fighting the flu: get a flu vaccine, cover your coughs and sneezes, and stay home if you're sick.