Phoebe Jones / WWNO The mass COVID-19 vaccination site at the Ernest N. Morial Convention Center is now open. After a test run on Wednesday, administering first doses of the Pfizer vaccine to roughly 780 patients, LCMC planned to vaccinate about 900 people with the Johnson & Johnson vaccine on Thursday. Patients enter the convention center’s spacious Hall J, where they are guided to a station with a tablet that allows them to find and print the barcode associated with their appointments. Then they head to the vaccination area, where several LCMC staff members administer the vaccines. Gretna resident Anthony Smith winced tightly when the needle pricked his right bicep, but he said the shot didn’t hurt. Even if it had, he was determined to be vaccinated.