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Source/Further reading:
https://www.cdc.gov/polio/whatispol...)
https://www.marchofdimes.org/mission/...
https://encryptedtbn0.gstatic.com/im...
https://www.ncbi.nlm.nih.gov/pmc/arti...
• April 12 1955: Polio Announcement
https://www.achievement.org/wpconten...
https://www.scientificamerican.com/ar...
“The Polio Crusade” American Experience, PBS (Documentary)