What a tragedy.
It seems that dairy is becoming more and more prevalent as the cause of death in allergic reactions in recent years.
When it comes to pointing fingers and laying the blame somewhere, this needs to be done with the intention of preventing future deaths for those with food allergies.
Costa (and similar establishments) need a clear and consistent approach to allergy requests, e.g., Always state out loud the allergies present in the requested order, always show customer the allergen book, always repeat the order back.
For the posters stating people with allergies shouldn't trust other people with their food or drink, I think this is too simplistic.
Imagine never being able to eat at a restaurant or a café, not buying packaged foods, not trusting any food labels in supermarkets.. the reality is that there has to be accountability from the businesses.
I don't think it's unreasonable for someone with an allergy to get a takeaway hot drink from a well known chain that claims to cater for those with allergies. And to suggest it is? Well, that's victim blaming.
I do speak from experience, as I have a child with multiple severe allergies, one of which is dairy.
After the diagnosis at 6 months old, my knee jerk reaction was to say we'd never have dairy in our home, all visitors would wash their hands when they arrive, and we'd never eat out.
Well, quite a few years down the line and we have dairy milk in our fridge, visitors do as they please and my son occasionally eats out (at places 'known' for being good with allergies, placing orders with the manager). This seems to be similar to other "allergy families" I know.
We all choose the risk level we're happiest with. As a parent, my job is to set my child up for success when they reach adulthood. This includes knowing how to safely order food/drinks and to advocate for themselves. It also includes risk assessing situations and sticking to safer options.
It's easy to suggest "well just never order out", but excluding your child from that sort of experience for 18 years is anything but easy, when they see their friends and family doing it regularly and are already excluded from so much because of their allergies.