Africa declared free of wild polio in 'milestone' - BBC News
Polio - Our World in Data
Correlation between polio immunization coverage and overall morbidity and mortality for COVID-19: an epidemiological study | Environmental Science and Pollution Research
Estimated total annual paralytic polio cases since 1950 with GPEI... | Download Scientific Diagram
Poliomielite - Wikipedia
No of confirmed polio cases in the last decade in Pakistan. | Download Scientific Diagram
Africa is on track to be declared polio-free
Two decades of battle against polio: opening a window to examine public health in China - ScienceDirect
Polio Data Quality Improvement in the African Region