[1: WHO, Immunization Coverage, Fact Sheet 2018, http://www.who.int/mediacentre/factsheets/fs378/en/][2: Rappuoli R (2014), DG Research New Horizon for Vaccine Conference, https://ec.europa.eu/research/health/pdf/event17/s2-2-rino-rappuoli_en.pdf]
[1: SZO, Cjepni obuhvat, Informativni članak za 2018., http://www.who.int/mediacentre/factsheets/fs378/en/][2: Rappuoli, R. (2014.), DG Research New Horizon for Vaccine Conference, https://ec.europa.eu/research/health/pdf/event17/s2-2-rino-rappuoli_en.pdf]