![Poliovirus vaccine doses administered before* and after † the December... | Download Scientific Diagram Poliovirus vaccine doses administered before* and after † the December... | Download Scientific Diagram](https://www.researchgate.net/publication/321834130/figure/fig1/AS:571911786557440@1513365803803/Poliovirus-vaccine-doses-administered-before-and-after-the-December-2014-introduction.png)
Poliovirus vaccine doses administered before* and after † the December... | Download Scientific Diagram
From Polio Pioneer to COVID-19 Crusader: An Infectious Disease Doctor's Reflection on Past and Present Vaccines - Penn Medicine
Vaccination campaign aims to reach over 2.8 million children with monovalent oral polio vaccines in South Sudan | WHO | Regional Office for Africa
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1955: Jonas Salk introduces his polio vaccine after a field trial involving 2 million children, conducted in public schools. But the first mass vaccination program in the U.S. had to be halted
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PDF] Introduction of sequential inactivated polio vaccine-oral polio vaccine schedule for routine infant immunization in Brazil's National Immunization Program. | Semantic Scholar
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