The Orange County Health Department has received a limited supply of H1N1 nasal mist and will be having walk-in clinics on Oct. 16 at 300 West Tryon Street in Hillsborough and 2501 Homestead Road in Chapel Hill from 1 p.m. until the supply is exhausted. The Centers for Disease Control has prioritized the following groups for this initial round of vaccination efforts: healthy, non-pregnant people between the ages of 2 and 24 and those between the ages of 25 and 49 who are healthy, non-pregnant and live with or care for a child less than 6 months of age. The walk-in clinics will be free.