A future coordinated cross-border measles vaccination catch-up campaign was envisaged to tackle immunity gaps in populations that have not been vaccinated against measles as part of the regular national childhood vaccination programmes (NIP). The aim of this report is to provide a review of experience and best practice on what has already been done across borders and what can be gained by teaming up, as well as the facilitators and barriers, regarding all vaccines (including Covid-19 vaccination).
