Addendum: I received a MAB infusion, not a series of shots. Spent a total of 6 hours in the ER.
An infusion is the standard way it’s given. An IV is attached to a vein (in my case in my wrist), and the antibodies flow into your bloodstream for about 10-15 minutes. Then a saline solution flows through the plastic tube to ensure that all the antibodies get into the bloodstream. From start to finish, it about 1 1/2 to 2 hours as they wait a while to ensure your vitals are normal.