They offered a free clinic Tuesday morning at the light house mission in Terre Haute.
The team vaccinated nearly 20 people in just a few hours.
Officials say it's an important step to "arm yourself" so we can all stay healthy.
"The flu vaccination and the actual flu season can go all the way until may so it's definitely great to get a high risk population completely covered, especially in times they're going to be in close contact like with this weather," said Christina Keller of the Vigo County Health Department.
The Vigo County Health Clinic also provides vaccines.
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