There is currently no cure for nut allergy, so the only way for allergy sufferers to eliminate risk of reaction is to entirely avoid contact. (bakeryandsnacks.com)
You haven't given these vaccinations to your ferret for risk of reaction, you say? (avianexoticsvet.com)
Risk of reactions increased by 27 percent for each additional vaccine given per office visit in dogs under 22 pounds, and by 12 percent in dogs over 22 pounds (healthypets.mercola.com)