1. WHO, UNICEF, World Bank. State of the world’s vaccines and immunization, 3rd ed. Geneva: World Health Organization; 2009.
2. World Health Organization. European vaccine action plan 2015–2020. 2014. http://www.euro.who.int . Accessed 22 Dec 2014.
3. Haverkate M, D’Ancona F, Giambi C, et al. Mandatory and recommended vaccination in the EU, Iceland and Norway: results of the VENICE 2012 survey on ways of implementing national vaccination programmes. Euro Surveill. 2012;17(22):20183.
4. European Centre for Disease Prevention and Control. ECDC technical report. Measles and rubella elimination: communicating the importance of vaccination. 2014. http://ecdc.europa.eu . Accessed 2 Feb 2015.
5. European Centre for Disease Prevention and Control. ECDC preliminary guidance: varicella vaccine in the European Union. 2014. http://www.ecdc.europa.eu . Accessed 2 Feb 2015.