meidel
House Bee
I can see this is something else that needs a proper study requiring grants of several hundred thousand pounds / euros per annum, possibly more to make 100% certain that we are all different, live in different areas, have different bees , eat different food, take different drugs / treatments or not, receive stings at different times of day / year, all of which will probably determine what is a "normal" reaction to being stung by a honey bee.
Chris
And don't forget, my pet theory - bees of different ages in different seasons doing the stinging