American Dr Jonas E. Salk announces new vaccine to immunise against polio, with the aid of which polio has been largely eradica

South African History Online. (2012, March 16). American Dr Jonas E. Salk announces new vaccine to immunise against polio, with the aid of which polio has been largely eradica. South African History Online. https://sahistory.org.za/ref/E-0079681

South African History Online (2012) 'American Dr Jonas E. Salk announces new vaccine to immunise against polio, with the aid of which polio has been largely eradica', South African History Online, 16 March. Available at: https://sahistory.org.za/ref/E-0079681 (Accessed: 7 August 2026).

South African History Online, American Dr Jonas E. Salk announces new vaccine to immunise against polio, with the aid of which polio has been largely eradica [website], https://sahistory.org.za/ref/E-0079681, (accessed 7 August 2026).

"American Dr Jonas E. Salk announces new vaccine to immunise against polio, with the aid of which polio has been largely eradica." South African History Online, 16 Mar. 2012, https://sahistory.org.za/ref/E-0079681. Accessed 7 Aug. 2026.

South African History Online. "American Dr Jonas E. Salk announces new vaccine to immunise against polio, with the aid of which polio has been largely eradica." South African History Online. March 16, 2012. https://sahistory.org.za/ref/E-0079681.