Assessing vaccine coverage is an essential component of vaccine programme monitoring and evaluation. Vaccine coverage data are available in EU/EEA countries both at national and subnational level and are used for programmatic purposes at any level. European wide data collection is performed by WHO through the CISID system, as part of the global data collection jointly conducted with UNICEF. Data quality and comparability is still challenging at international level. According to available information, vaccination registries are available in 11 countries in the EU/EEA, but only in five countries they have national coverage. In 2012 ECDC, through the VENICE II network, started the European Vaccination Coverage Collection System (EVACO project), with the final aim of improving the quality of vaccine coverage data at EU level, by defining and implementing standards. This article is protected by copyright. All rights reserved.