How to sign up for the mass vaccination at the Convention Center Beginning at 7 a.m. Wednesday, COVID mass vaccination appointments will be available. Those looking for one can call 504.290.5200 or log on to LCMCHealth.org/vaccine Author: Meg Farris (WWL), Asha Staples Published: 7:07 PM CST March 2, 2021 Updated: 7:45 AM CST March 3, 2021 NEW ORLEANS — Beginning at 7 a.m. Wednesday, COVID-19 mass vaccination appointments will be available. Those looking to book an appointment can call 504.290.5200 or log on to LCMCHealth.org/vaccine. The shipment of nearly 38,000 doses of the new Johnson and Johnson COVID vaccine to Louisiana means a mass vaccination site will now open at the New Orleans Convention Center.