Yes indeed.

Like this story at BBC News: 59 years old Richard Francis was stung on the elbow on Sunday and started feeling ill 10 minutes later. Francis hd severe allergy to insect stings, but had no medication with him as he walked with his wife in Builth Wells, Powys.

If you have severe allergy to insect stings, be sure to have your medication with you and do not go alone into the woods of any other place where you will most probably encounter bees for example.