More South Dakotans are protecting themselves from the H1N1 flu.

An H1N1 vaccine clinic is being held in Sioux Falls at the Sullivan Health Science Center on the campus of Southeast Technical Institute. It's open to people in tier 1 and 2. There are 500 vaccines available, in the mist and shot forms. The vaccines will be distributed until 2 p.m. Tuesday.

For more information on vaccine clinics being held across South Dakota, visit the state's Department of Health Web site.