1. Progress toward poliomyelitis eradication—Pakistan, January 2015–September 2016.;Hsu;MMWR Morb Mortal Wkly Rep,2016
2. Progress toward poliomyelitis eradication—Pakistan, January 2014–September 2015.;Farag;MMWR Morb Mortal Wkly Rep,2015
3. Global Polio Eradication Initiative. Polio this week. Geneva, Switzerland: World Health Organization, Global Polio Eradication Initiative; 2017. http://polioeradication.org/polio-today/polio-now/this-week/
4. Government of Pakistan. National emergency action plan for polio eradication 2017–2018. Islamabad, Pakistan: Government of Pakistan; 2017. http://polioeradication.org/wp-content/uploads/2016/07/NEAP-2017_2018_v6.pdf
5. World Health Organization. Vaccine-preventable diseases: monitoring system. 2017 global summary. Geneva, Switzerland: World Health Organization; 2017. http://apps.who.int/immunization_monitoring/globalsummary