TRANSVAC research infrastructure - Results and lessons learned from the European network of vaccine research and development.

•Collaborative infrastructure project designed to foster European R&D and training in the vaccine field.•Development and optimisation of public vaccine R&D platforms accessible to the European research community.•Cross-sectional research activities focussed on optimisation and harmonisation of highly specialised vaccine R&D services and training within a regulatory framework.•International networking to enhance collaboration among European vaccine research stakeholders.•Basis for establishment of a sustainable European infrastructure for vaccine R&D.