Links

World Health Organization, Poliomyelitis, Fact sheet

• http://www.who.int/mediacentre/factsheets/fs114/en/index.html

Wikipedia, the free encyclopedia. Introduction to Polio-vaccine

• http://en.wikipedia.org/wiki/Polio_vaccine

Global Polio Eradication Initiative, Wild Poliovirus Weekly Update

• http://www.polioeradication.org/casecount.asp

Centers for Disease Control and Prevention (CDC), Polio Topics

• http://www.cdc.gov/polio/

UNICEF, Eradicating Polio

• http://www.unicef.org/immunization/polio/index.html

MedlinePlus, Polio and Post-Polio Syndrome

• http://www.nlm.nih.gov/medlineplus/polioandpostpoliosyndrome.html