Jonas Salk

The Salk polio vaccine had its positives and negatives while disturbed.

Polio Facts

• viral infection
• excreted as feces
• majority never went past sore throat & fever
• the iron lung was needed in some cases 
• hit middle class hardest

Salk Vaccine

• first effective vaccine given to public in 1955
• safe 
• made from a killed polio virus
• inject able vaccine/shot
• conducted the largest field test for vaccines

Koprowski & Sabin Vaccines

• both of these were oral vaccines
• Sabin vaccine confers longer lasting imunnity
• Sabin vaccine worked in matter of days
• oral vaccines are cheeper
• only had to be taken once 

Works Citated

• "polio." Hutchinson Encyclopedia. 2011. eLibrary. Web. 14 Mar. 2014. Blume, Stuart, and Ingrid Geesink.
• "A brief history of polio vaccines." Science 288.5471 (2000): 1593-1594.
• "Poliomyelitis." Magill's Medical Guide, 4th Rev. ed.. 2008. eLibrary. Web. 17 Mar. 2014.