My husband and I (both in our 70’s) were both fully vaccinated. I developed break-through symptoms/tested positive 3 days after attending a funeral, gave it to my husband. We both had the IV monoclonal antibodies treatment at our local hospital’s ER. The infusion took about 25 minutes, then had to wait for an hour for any side effects (none at all). My husband received it on Day 2 of symptoms, he recovered with very mild symptoms in 2-3 days, I had it on Day 10, very quick recovery.