(Radio Iowa) – A mass COVID-19 vaccination clinic was held at the Tyson Events Center in downtown Sioux City on Wednesday. Officials say around 15-hundred people received their first dose of the vaccine. Siouxland District Health Department spokesman Tyler Brock says vaccine demand is still high and a mass clinic can help meet that demand — a little. “We know it’s not enough,” Brock says. “We know there’s more people out there still that want vaccine and haven’t been able to get it, but we also are starting to see more and more people actually cancel their appointments because they’re getting vaccine somewhere else.”

The clinic was only for people in Woodbury County who are 65 and older, teachers and others who are eligible. Sixty-five-year-old Gloria Anderson got her vaccine and says she’s a little uneasy about possible side effects from it. “But I think that getting it is better than the risk of not getting it,” Anderson says.

When the event was announced last week, the phone bank got seven-thousand calls from people trying to make appointments for 15-hundred slots. This was the fourth mass clinic at the Tyson in Sioux City. The University of Iowa Hospitals & Clinics has also been holding large-scale vaccination events in Iowa City.