Global epidemiology of vaccine-derived poliovirus 2016–2021: A descriptive analysis and retrospective case-control study - eClinicalMedicine
Global Polio - Level 2 - Level 2 - Practice Enhanced Precautions - Travel Health Notices | Travelers' Health | CDC
First U.S. Polio Case in Nearly a Decade Highlights the Importance of Vaccination - Scientific American
Polio - Our World in Data
Polio vaccination map: The states with highest and lowest rates
Chart: The Long Road to Global Wild Polio Eradication | Statista
New polio cases in Africa as Malawi launches vaccine campaign | CIDRAP
Polio - Our World in Data
Polio Amidst COVID-19 in Pakistan: What are the Efforts Being Made and Challenges at Hand? in: The American Journal of Tropical Medicine and Hygiene Volume 104 Issue 2 (2021)
New York Health Department says hundreds of people may be infected with polio virus - CBS News
Polio Cases Surge in Pakistan and Afghanistan - The New York Times