(Fall River) The Columbia County Health Department will be hosting a free walk-in COVID vaccine clinic Thursday. County health officials say the clinic will be for a 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 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 Prairie Street Athletic Complex at 311 Prairie Street in Fall River between 3pm and 7pm tomorrow. To schedule a vaccine shot visit vaccinate.wi.gov.