Development of novel vaccines for viral pathogens with epidemic potential - Cluster 1 - Health (Single stage - 2026) (HORIZON-HLTH-2026-01-DISEASE-04). 

Expected Outcome:
This topic aims at supporting activities that are enabling or contributing to one or several expected impacts of destination “Tackling diseases and reducing disease burden”. To that end, proposals under this topic should aim to deliver results that are directed at, tailored towards and contributing to all the following expected outcomes:

• The scientific and clinical communities have a better understanding of and access to experimental vaccines for the prevention and treatment of emerging or re-emerging viral infections, as well as for further clinical investigation, including better understanding of biological sex and social determinants that influence immune response, vaccine efficacy, safety, and uptake.
• Candidate vaccines are available for emerging and re-emerging viral infections, increasing therapeutic options for clinical deployment in case of an epidemic or pandemic.