“You’ve been in the hospital a week and you die of the original anaphylactic reaction?”
It can happen. It depends on what you’re allergic to and how allergic you are to it.
L
It can cause the organs to start shutting down. In that case a person may not suddenly drop dead. In a hospital they can keep someone alive for awhile with everything shutting down, but at some point they’re gonna pull the plug, I’m guessing that’s what happened here.