Seniors report smooth sailing for 1st day of vaccinations at Northside center Center will be able to vaccinate 975 patients over next 2 days Updated: Tags: JACKSONVILLE, Fla. – When the doors opened at 9 a.m., more than 100 people were waiting to get their COVID-19 shot Friday morning at the Clanzel T. Brown Senior Center on Moncrief Road. Some opted to continue to wait in line while others took a voucher that allowed them to return later in the day for their dose. By 12:30 p.m., about 300 vaccines had been administered. Many of the seniors said they were pleased the city had opened the center for vaccines, even if supply is limited. They said everything went fairly smoothly and no issues were reported.