The Dallas County Health Department has a limited number of doses of the H1N1 influenza vaccine to give to individuals in targeted high-risk groups.

The health department is open until 6 p.m. today, Wednesday, to give those doses, according to Stacy Adams, a spokesperson for the county health department.

The vaccinations will be given Wednesday as long as the vaccine lasts. The health department received 500 doses and some were given to individual providers, Adams said.

Doses are limited to high-risk groups, which include: pregnant women; children 6 months through 4 years old; parents, siblings and caregivers of children less than 6 months old; children 5 to 18 years old who have underlying medical conditions and health care workers.

“We plan to give them again as soon as we have more of the vaccine,” Adams said. “The supply is so limited nationwide.”

Adams said the health department is asking people to “please be patient.”