1. World Health Organization. Global Vaccine Action Plan, 2011–2020. Geneva, Switzerland: World Health Organization; 2013. [accessed: September 5, 2017].
2. Global vaccine action plan: monitoring, evaluation, and accountability. secretariat annual report 2016. Geneva, Switzerland: World Health Organization; 2016. [accessed: September 5, 2017].
3. Surveillance standards for vaccine-preventable diseases, 2nd ed. Geneva: World Health Organization; 2018. [accessed: October 9, 2018].
4. Roadmap to elimination standard measles and rubella surveillance;Sniadack;Wkly Epidemiol Rec,2017
5. Infectious disease surveillance;Murray,2017