Farm Vaccination - Injection Method Oil Emulsion Vaccines Introduction Oil emulsion vaccines have played a major role in the poultry industry. Vaccinating with oil emulsions produces a high level of immunity that is long lived.
Emulsions are stable mixtures of two immiscible liquids.
Emulsions are not unique to vaccines. Milk, rubber latex, mayonnaise, ice cream, lotions, polishes and insecticides are all examples of emulsions. This is the internal or discontinuous phase. The oil surrounds the aqueous phase and is called the continuous or external phase. Most oil emulsion vaccines use mineral oil, a non metabolizable oil.