The more energetic youngsters climbed trees and played on the school's hillside, calling out to their parents for more pretzels, raisins and juice.
"Julia! That's your karate uniform - look at it," Lisa Perez shouted at her grinning 8-year-old on a hill. The white outfit was covered in dirt.
Branch, the county health officer, estimated that the county received enough vaccine for 2,500 to 3,000 adult doses for the clinic held only days after three others were canceled last week because of a lack of vaccine. He expects more vaccine to arrive within a few weeks.
Most of those vaccinated Saturday were children, Branch said. And because children require smaller doses, the injectable supply went further.
Still, the clinic ran out of injectable vaccine after about five hours, turning away anyone who didn't meet the requirements for the nasal spray. Pregnant women, adults with health problems and children younger than 2 cannot receive the spray.
"I was the first person they told no more shots," said Elizabeth McKenzie of Parkville, who, because she is pregnant, is not a candidate for the nasal mist.
She and her husband, Brian, were not entirely disappointed. Their son Cameron, 2, got his spray vaccine, and his Curious George stuffed animal was wearing a sticker to prove it. And nurses told the couple that Elizabeth McKenzie could call for an appointment to avoid another wait.
Others were not as pleased.
"Five hours for nothing," said Tony Hynes of Dundalk. None of his three children could be vaccinated after the injectable vaccine ran out, because they are asthmatic and cannot receive the nasal spray, which contains the live virus.
One elderly woman with health problems, who had not eaten all day, became ill and was treated by paramedics.
Tina Baynes and her 11-year-old son, from Street in Harford County, spent three hours in line only to find out that his asthma precluded him from getting the mist vaccine.
"Next time," she said, "we going to spend the night in the car."