(Portage) Columbia County Health will be changing their COVID vaccination clinic schedule. Health officials say they will be holding a second dose Moderna clinic only at their offices at 111 East Mullet Street in Portage on Thursday (May 6th). Those eligible for the second dose have been pre-scheduled. Next Thursday (May 13th), a first dose Moderna vaccination clinic will be held at East Mullet Street. Walk-ins are welcomed or people can schedule an appointment online after 1pm on Monday (May 10th). Health officials say Johnson and Johnson mobile clinics are in the works. For assistance with scheduling call 920-742-9227 or visit the county’s website at www.co.columbia.wi.us.