It is common sense! The antibodies are in the blood, you pass the blood to someone else, they now have the antibodies. I doesn't take an expensive research project to work that out!

It's not surprising there are so many children with peanut allergy. Many vitamin supplements have peanut oil in them - sometimes given as Arachis Oil. It was in the cream my sister was given for sore nipples when breast-feeding - and my niece is allergic to peanuts - probably as a direct result of this. No one else in the family has a sensitivity like this.
Be very careful when buying vitamin supplements - the problem occurs with some of the best known brands - even some of those recommended, for babies, by the medical profession!

When studying blood banking, I recall reading a story where a patient received blood from a person allergic to horses. When the patient road home by horse carriage, they suffered an asthma attack from riding behind the horse. Allergic reactions transferred from a donor is on of the oldest documented transfusion reactions. I have always wondered why persons with anaphylaxis allergies are not restricted from donating plasma or platelets for transfusion. Plasma is where the IgE (allergic) antibodies would reside.