1. WHO Regional Office for Europe. Europe observes a 4-fold increase in measles cases in 2017 compared to previous year. 2018 http://www.euro.who.int/en/media-centre/sections/press-releases/2018/europe-observes-a-4-fold-increase-in-measles-cases-in-2017-compared-to-previous-year (cited 19th Jun 2018).
2. WHO. WHO vaccine-preventable diseases: monitoring system. 2017 global summary. 2018 http://apps.who.int/immunization_monitoring/globalsummary/schedules (cited 19th Jun 2018).
3. ECDC. Review of outbreaks and barriers to MMR vaccination coverage among hard-to-reach populations in Europe. Stockholm: ECDC, 2013.
4. De Vito E . A review of evidence on equitable delivery, access and utilization of immunization services for migrants and refugees in the WHO European Region. Copenhagen: WHO Regional Office for Europe (Health Evidence Network (HEN) synthesis report 53), 2017.
5. Measles among migrants in the European Union and the European Economic Area