THE CHALLENGE
The world needs vaccine technologies that are faster, more flexible and suitable for repeated use.
Emerging pathogens, demographic change, global mobility and increasing health demands in both human and animal health require vaccine platforms that can be rapidly adapted, efficiently manufactured and deployed across different indications. Viral vectors are powerful tools for immune activation, but many are limited by pre-existing or induced neutralizing anti-vector immunity, restricting their repeated use in the same individual.
To address infectious diseases, cancer, veterinary health challenges and future outbreak scenarios, next-generation vaccine platforms must combine strong immunogenicity with modular design, scalable production, favourable stability and repeat dosing potential.
THE SOLUTION
PVT’s ORFV-based vector platform is designed to overcome these limitations.
Our modular technology enables the rapid generation of mono- and multivalent vaccine candidates encoding pathogen- or tumor-specific antigens together with immune-modulatory payloads. The platform allows stable integration of up to five transgenes, enabling flexible antigen combinations and tailored immune modulation within a single ORFV backbone.
PVT’s ORFV platform is designed to induce balanced humoral and cellular immune responses without additional adjuvants and without requiring vector replication in the vaccinated host. Due to the absence of neutralizing anti-ORFV vector immunity, the platform supports repeated administration and flexible vaccine strategies.
Combined with rapid vector engineering, scalable manufacturing and excellent stability characteristics, PVT’s technology provides a powerful foundation for next-generation vaccines and immunotherapies in human and animal health.
Mechanism of Action of the ORFV Vector Platform
From engineered vector to antigen-specific immunity

Safe by design
ORFV is non-pathogenic in humans and has an excellent safety profile
Versatile platform
Modular design enables rapid customization for diverse antigens and disease targets
Protect & durable
Induces strong innate and adaptive immunity for long-lasting protection
Modular and Multivalent ORFV Vector Design
One ORFV backbone can support multiple vaccine and immunotherapy concepts


