Together with Cochrane Germany, Cochrane Ireland, German Robert Koch Institute and PricewaterhouseCoopers (PwC) Luxembourg, a health project is being carried out for the European Health and Digital Executive Agency (HaDEA). The aim of the project is to support EU Member States in decision-making on national vaccination programs, including COVID-19 vaccines and any adaptations of these vaccines due to the emergence of SARS-CoV-2 variants. The project includes the following work steps: - Conduct Systematic Reviews or Rapid Reviews of scientific evidence in the area of vaccines and/or EU/EEA vaccination programs, including COVID-19. - Preparation, planning, structuring, and delivery of online training on evidence assessment methods and the conduct of reviews, syntheses, and evaluations, and subsequent translation into technical documents/guidance. - Conduct capacity building activities to strengthen collaboration, such as online meetings, staff exchanges, and continued access and sharing of information through the EU/EEA-NITAG collaboration.