File:Polio cases over time.svg - Wikimedia Commons
Total number of wild poliovirus cases in India from 1995 to 2012. | Download Scientific Diagram
Eradication of polio – Is Syria being left behind? | Centre for Research Excellence Integrated Systems for Epidemic Response
Polio vaccination in Pakistan
Polio - Our World in Data
BBC News Graphics on Twitter: "GRAPH: How India's polio cases fell dramatically over the past three decades to zero today http://t.co/K6iCP3uBpU http://t.co/QzsQ6KzRg7" / Twitter
Graphical proof that vaccines work (with sources) | by Isabella B. | Medium
Reported paralytic polio cases and deaths - Our World in Data
WHO vaccine-preventable diseases: monitoring system. 2020 global summary