AVS Bio is a global life-sciences company that provides biological materials and discovery services used in the development of vaccines, therapeutics, diagnostics, and other biologics. Headquartered in Norwich, Connecticut, the company has more than 60 years of experience supporting pharmaceutical, biotechnology, and animal health industries with essential inputs such as specific pathogen-free (SPF) eggs, antigens, antibodies, and engineered proteins.

Originally founded in 1961 as SPAFAS, the company pioneered the commercialization of SPF egg production and has since expanded its capabilities to include antibody discovery and development services, custom biologics, testing services, and protein engineering. These products and services help researchers and manufacturers accelerate biologics discovery and production across human, animal, and environmental health applications.

Today, AVS Bio operates facilities across North America and Europe and partners with global biotech and pharmaceutical organizations, providing scalable materials and scientific expertise to support projects from early discovery through manufacturing.