Off topic, so apologies. Posting for awareness. Often goes undiagnosed because symptoms vary greatly and it’s food that one has eaten their entire lives. Mammal products are in a lot of things you would never suspect. Fillers and biding agents in meds can be animal based, vitamins in enriched flour, shampoos, etc. Part of the article
Why so many people are becoming allergic to meat
This syndrome affects some thousands of people in the USA and an uncertain but likely larger number worldwide, and after a decade of research, scientists have begun to understand what causes it. It is created by the bite of a tick, picked up on a hike or brushed against in a garden, or hitchhiking on the fur of a pet that was roaming outside.
The illness, which generally goes by the name "alpha-gal allergy" after the component of meat that triggers it, is a trial that McGraw and her family are still learning to cope with. In much the same way, medicine is grappling with it too.
https://www-m.cnn.com/2018/12/11/health/tick-bites-meat-allergy-intl-partner/index.html