OPV – GPEI
Story of the drop: what's inside a polio vaccine that prevents up to 3 million deaths every year - Poliovirus - DAWN.COM
History of polio vaccination
Albert Sabin - Wikipedia
Years in the making: the World Health Organization prequalifies type 2 novel oral polio vaccine | PATH
The Forgotten Texan Scientist Who Helped Develop the Polio Vaccine
1961 Press Photo Dr. Albert B. Sabin, developer of an oral Polio vacci - Historic Images
:max_bytes(150000):strip_icc()/jonassalk-5b43cc6d46e0fb0037dfbf3a.jpg "Biography of Jonas Salk: Inventor of the Polio Vaccine")
Biography of Jonas Salk: Inventor of the Polio Vaccine
Jonas Salk - Wikipedia
The Forgotten Texan Scientist Who Helped Develop the Polio Vaccine
U.S. Vaccine Hesitancy Is Nothing New. Here's How The Polio Vaccine Overcame It : Shots - Health News : NPR
Polio vaccine - Wikipedia
Mass Inoculation or: How New York Learned to Stop Worrying and Love the Polio Vaccine — NYC Department of Records & Information Services
History of polio vaccination
How a debate over two competing vaccines gripped the medical community — in 1961 | Salon.com
Jonas Salk's Polio Vaccine Makes A Comeback : Goats and Soda : NPR
Polio vaccine | Description, History, & Effectiveness | Britannica
History of polio vaccination
The History of the Polio Vaccine and Animal Testing | PETA
Polio vaccine - Wikipedia
Lessons from how the polio vaccine went from the lab to the public that Americans can learn from today
Our history: Sabin and Salk competed for safest polio vaccine
Jonas Salk | Biography, Facts, & Polio Vaccine | Britannica
