According to current guidelines, virtually EVERYBODY can get the vaccine without special precaution and should be observed for 15 minutes. This includes all patients with allergy (including anaphylaxis) to food, medication, venom, aeroallergen sensitivity, and even those with idiopathic anaphylaxis.
People with a history of anaphylaxis to another vaccine or any INJECTABLE medication should get the vaccine and be observed for 30 minutes afterwards.
The ONLY patients who should not be immunized are those who have had anaphylaxis to a component of the COVID vaccine (of which there are few that are RARE allergens or NOT allergens. The most common of the very rare allergens is polyethylene glycol). The vaccine DOES NOT contain any food derivatives or other medications including neomycin.