Hundreds of eligible adults came to Nassau Community College on Saturday to get their COVID-19 booster shots.

For Barbara McFadden, of West Hempstead, she was enthusiastic about rolling up her sleeve for a third time.

"Get out there, roll up your sleeve, give your arm and get that vaccine," she said.

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The Nassau County Health Department brought the boosters to the campus. For more than four hours, volunteers vaccinated people with either the Moderna or Johnson & Johnson doses. It was open to those who made appointments and those who just showed up.

The booster event comes a day after the FDA approved emergency use authorization for Pfizer's COVID-19 vaccine for children ages 5 to 11. Kids will be given a third of the dose that's given to teenagers and adults.

The Centers for Disease Control and Prevention is expected to sign off on Pfizer's COVID vaccine for kids 5 to 11 as early as next week.

"We do believe that boosters really will limit breakthrough, and the vaccinating of children, which we expect will start in the next week or so,” says Lawrence Eisenstein, the county’s health commissioner.

Officials from the Nassau County Health Department say the volunteers are a tremendous help. Elliot Siegel, a retired oral surgeon from Massapequa Park, has volunteered his time for the last 15 months to vaccinate people against COVID-19.

"We're saving lives, and we're going to defeat this coronavirus, and this is the best way to do it," he says.