Sour Grapes! (cross contamination)

Back on 1/26/18 Andi had a minor reaction to eating grapes, and we have narrowed down to a probable cross contamination.

She was eating her grapes first, as she usually eat her fruit first at dinner.  She complained to me that her throat hurt, so i had her take a break eating.  Later i urged her to eat her pizza but she didn't really want it, so i told her to at least finish her grapes.  She proceeded to eat more of them, gag, and vomit.  She had very flushed/pink cheeks but was otherwise acting fine, no hives.

I realized that a few nights earlier she had woken up gagging (i thought she was going to vomit) but I was able to get her some water and back to bed.  I think she had been eating the grapes.  Thank goodness we never put any in her lunch that week.  I called the grocery store to find out if there were any bags of peanuts anywhere near grapes in the produce section ( we order our groceries and curb side pick up).  They said no, but could not guarantee, because items come shipped together all jumbled up in one big truck.

I figure because grapes have a very "open" type of bag, and people can reach their hands in directly on the produce to make the bags different weights, etc. we were looking at possible cross contamination.  We quit grapes for a week or so.  I figured a grape allergy was highly unlikely because she'd been having grapes her whole life.  I got purple grapes next and we tried those with no problems, and eventually re introduced green grapes as well.