Soligenix Announces Publication Describing Long-Term High Temperature Stability of Protein Subunit Vaccines for Ebola and Related Viruses

Two Year Stability demonstrated in both bivalent and trivalent configurations at temperatures of 40°C / 104°F

PRINCETON, N.J., Sept. 4, 2025 /PRNewswire/ -- Soligenix, Inc. (Nasdaq: SNGX) (Soligenix or the Company), a late-stage biopharmaceutical company focused on developing and commercializing products to treat rare diseases where there is an unmet medical need, announced today a publication describing the extended stability of ebolavirus vaccines using its ThermoVax^® platform. Bivalent and trivalent vaccines, constructed from antigens against Zaire ebolavirus, Sudan ebolavirus and Marburg marburgvirus and the CoVaccine HT™ antigen, were formulated in a single vial and subjected to long-term storage at up to 40°C (104°F). After two years of storage, all vaccines were unchanged and had equivalent potency as when initially manufactured. In collaboration with Axel Lehrer, PhD, Professor at the Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaiʻi at Mānoa, the manuscript entitled "Thermostable Bivalent & Trivalent Filovirus Vaccines from Insect Cells: Potency Demonstrated after 3 Months and 2 Years", has been accepted for publication and is available online in Vaccine.

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