Risk factors for the spread of vaccine-derived type 2 polioviruses after global withdrawal of trivalent oral poliovirus vaccine and the effects of outbreak responses with monovalent vaccine: a retrospective analysis of surveillance
Vaccination is important on World Polio Day and everyday
2 Polio Paralysis Cases in Nigeria Set Back Eradication Effort - The New York Times
Polio this week as of 23 November 2016 - Pakistan | ReliefWeb
Our history: Sabin and Salk competed for safest polio vaccine
World Polio Day 2016 highlights Rotary's progress to end polio | Rotary District 5730
6 Ways the Fight Against Polio Is Transforming Global Health | UNICEF USA
The world just took a step closer to eradicating polio | World Economic Forum
Evolving epidemiology of poliovirus serotype 2 following withdrawal of the serotype 2 oral poliovirus vaccine | Science
The Unfolding of Polio - The New York Times
World Health Organization (WHO) on Twitter: "#Polio cases worldwide: 1988: 350000 2016: 27 That's a ⬇ of more than 99.9% #VaccinesWork! Let's #EndPolio #WorldPolioDay https://t.co/bvvHTOFA7b" / Twitter
New Polio Vaccine Rolled Out In Massive Synchronized Worldwide Switch : The Two-Way : NPR
Attacks Hamper Pakistan's Efforts on Polio – The Diplomat
Polio vaccine drive targets 41 million African children as Nigeria fights virus | Global health | The Guardian