re: Would you get the Regeneron antibody infusion if you had Covid?

A friend of mine has had covid for almost 2 weeks now. He was actually starting to get better. On Tuesday he went to get the infusion. 4 hours later he was in the ER. His heart rate dropped, he passed out, next thing he remembered was waking up in an ambulance.

Last time I talked to him they believe he had some sort of anaphylactic reaction to the infusion. First I’ve heard of that happening.