UNSPSC 51201800: Immunostimulating agents

This classification denotes drugs or other preparations that engender a natural but heightened imune response, or formulations for presenting an antigen to induce specific immunologic responses. it consists of an assembly of antigens in multimeric form. the assembly is attached to a matrix with a built-in adjuvant, saponin. iscoms induce strong serum antibody responses, and are used as highly immunogenic forms of subunit vaccines.

UNSPSC 51201800 Immunostimulating agents is a Class code under which state and local health departments procure vaccines and related immunological products for public health programs. The recent activity under this code reflects procurement of specific vaccines for state immunization initiatives, rather than a broad family of immunostimulant pharmaceuticals. State health departments are the primary issuing bodies for work under this code, typically managing vaccine procurement through sole source or competitive purchasing when alternatives exist.

The Mississippi State Department of Health posted a sole source notice on July 13, 2026 for Yellow Fever Vaccine from Sanofi Pasteur, Inc., with an objection deadline of August 3, 2026. The notice invites challenges to the sole source designation; if substantiated objections demonstrate alternative vendors can supply the vaccine, the department will conduct a competitive bid process. The specific quantity, contract term, and estimated value were not disclosed in the notice. Mississippi appears to be the only state with recent documented activity under this code in the available opportunities block.