This site requires Javascript to be turned on. Please enable Javascript and reload the page. Jonas Salk and the Invention of the Polio Vaccine Main Menu A Brief History of Variolation A Brief History of Vaccination Polio Timeline Alvaro Quezada 7828c851ddc470a00b45eb00bde06e8e2aefd52c Jonas Salk and the invention of the Polio Vaccine 1 media/egypt.JPG media/jonas-salk-polio-vaccine.jpg 2020-09-09T11:58:51-07:00 Alvaro Quezada 7828c851ddc470a00b45eb00bde06e8e2aefd52c 37889 14 splash 2020-09-09T16:59:46-07:00 Alvaro Quezada 7828c851ddc470a00b45eb00bde06e8e2aefd52c Contents of this path: 1 2020-09-09T12:49:20-07:00 Alvaro Quezada 7828c851ddc470a00b45eb00bde06e8e2aefd52c Brief history of inoculation 4 plain 2020-09-09T17:12:39-07:00 Alvaro Quezada 7828c851ddc470a00b45eb00bde06e8e2aefd52c