Jason Crawford on X: "@Bapitts @davidasinclair @CalvinAyre @salkinstitute No, the epidemics were actually getting worse. The peak year for polio cases in the US was 1952, just a few years before the
![Annual poliomyelitis case rate in U.S. States reporting both cases and... | Download Scientific Diagram Annual poliomyelitis case rate in U.S. States reporting both cases and... | Download Scientific Diagram](https://www.researchgate.net/publication/278382620/figure/fig5/AS:364276662456324@1463861732935/Annual-poliomyelitis-case-rate-in-US-States-reporting-both-cases-and-deaths-From-1910.png)
Annual poliomyelitis case rate in U.S. States reporting both cases and... | Download Scientific Diagram
Rotary International - Polio cases went from an epidemic to non-existent in the United States in the last 100 years. Our World in Data explores the history of pushing the disease to
![Opinion: Polio immunization in the 1950s offers clues of how coronavirus vaccines might be rolled out - MarketWatch Opinion: Polio immunization in the 1950s offers clues of how coronavirus vaccines might be rolled out - MarketWatch](https://ei.marketwatch.com/Multimedia/2020/09/16/Photos/NS/MW-IO597_polioP_20200916140203_NS.png?uuid=ba1a3a52-f846-11ea-9583-9c8e992d421e)