FloatingFatMan, on 28 December 2012 - 15:11, said:
You don't put "then" for a time period several days (or even hours) later, you put it when you mean almost immediately after.
Or it's being used to establish a sequence of events rather than necessarily meaning immediately after. If I'd have replied to your post tomorrow, one could still say FloatingFatMan posted then Manish did.
If it was anaphylaxis, he'd be unlikely to experience just abdominal pain and die despite managing to seek medical help.
Shall we just agree to disagree as it's pointless trying to diagnose the cause of death solely based off this article?