Forgot to say do you know what researchers do when they want to study allergies using animals? The animals used for the studies do not have allergies so something must be done to make tham allergic so that the tests can be carried out.
So what do they do? They vaccinate them.
From this page quite far down
"Helm et al in Environmental Health Perspectives article "Nonmurine Animal Models of Food Allergy" discuss ways to create animal models of human food allergy. (59) Animal models are discussed extensively, including "the use of adjuvants (natural or artificial--alum, cholera toxin, Bordetella pertussis, and carrageenan are known IgE-selective adjuvants)" in those animal models. They go on to describe, "In the atopic dog model for food allergy (Ermel et al. 1997), newborn pups (day 1) were subcutaneously injected in the axillas with 1 µg of cow's milk, beef, ragweed, and wheat extracts in alum. Food antigen was again administered on days 22, 29, 50, 78, and 85. At ages 3, 7, and 11 weeks, all pups were vaccinated with attenuated distemper-hepatitis vaccine...Immunized pups responded with allergen-specific IgE by week 3 and peaked at week 26 of age...All clinical manifestations are consistent with infant, adolescent, and adult food allergy in humans."
It has been shown repeatedly that vaccination can cause sensitization, including anaphylaxis, to vaccine ingredients. Nelson et al (2000) discuss a 4 month old baby's anaphylactic reaction to the CRM 197 protein in the Hib vaccine. (60) As far back as 1940 Cooke et al noted that "The real object of this presentation is to acquaint the medical profession with proof of the fact that sensitivity can be induced as a result of the present procedures of active immunization to tetanus." (61) Cooke et al also mentioned Neill et all (1929) noted hypersensitivity to diphtheria bacilli. (62)"