Comment by Udo

Something's still missing. Peanut allergies seem to be very common in the US, but almost unheard-of in the EU. Yet, I would say the US is the country with way more peanut products and more peanut exposure. In northern Europe (my main experience is Germany), peanut butter has made the mass market only relatively recently (I'd say about 20 years max), while before most peanuts were being consumed by adults in the form of salted nuts as a late-evening snack. Compare that to the US where peanut butter has been a staple food ingredient since at least the sixties.