Autogenous biologics are custom vaccines, consisting of herd specific (homologous) antigens. Under federal regulation, they are manufactured from bacterial or viral strains isolated in conjunction with animal disease. The disease-causing microorganisms are grown in culture, killed and mixed with an adjuvant. An adjuvant is simply an immunological agent that enhances the immune response to a vaccine. Autogenous Biologicals are regulated by the USDA’s Center for Veterinary Biologics according to the Virus-Serum-Toxin Act, 9CFR 113.113. State veterinarians have regulatory oversight. [read more – click link below]