The bigger question is . . .
How long is it going to be until there is a mandatory "nut allergy vaccine" in the form of a required patch / injection of peanut dust in order to allow nut-allergic children to go to school?
If nut-allergies are shown to be preventable in the same way as measles, etc., why should a school have to be completely on edge about a child going into shock because some other child brought a sandwich to lunch? The economic benefits alone of doing away with the nonsense of nut separation in snacks, parties, cafeteria choices, medical equipment on-hand, etc. would pay for making this part of the immunization package for kindergarten entry.
Isn't it a form of child abuse to allow your child to live with a curable allergy that could kill them in a moment's notice?