Chart: The Long Road to Global Wild Polio Eradication | Statista
Polio - Our World in Data
Poliomyelitis - Hot Topics - September 2022 | Children's Mercy Kansas City
Africa is on track to be declared polio-free | The Economist
Chart: The Long Road to Global Wild Polio Eradication | Statista
Further Review: The Fight Against Polio | The Spokesman-Review
File:Polio cases over time.svg - Wikimedia Commons
Polio - Our World in Data
Cases and Graphs of polio.
Jason Crawford on Twitter: "Myth: polio was already declining before the introduction of the polio vaccine in 1955 Fact: the epidemics were actually getting worse https://t.co/MYSkeT1et7 https://t.co/VNSM3ngpp3" / Twitter