(Columbus) The Columbia County Health Department will be hosting a free walk-in COVID vaccine clinic this Friday. County health officials say the clinic will be for the one-and-done Johnson and Johnson shot. The J and J vaccine is only offered to those 18 and older. Appointments are not necessary to receive the vaccine but people can schedule ahead of time. Those interested in going must stay on site for a 15-minute observation period after receiving the vaccine. Health officials also ask those in attendance to practice social distancing and wear a mask. The clinic will be at the American Packaging Corporation located at 100 APC Way in Columbus. Shots will be offered between 6am and 9am and 2pm and 4pm Friday. To schedule a vaccine shot visit vaccinate.wi.gov.