Dr Jonas Salk develops a vaccine against polio. With the help of this vaccine, polio was obliterated from SA.

South African History Online. (2012, April 5). Dr Jonas Salk develops a vaccine against polio. With the help of this vaccine, polio was obliterated from SA.. South African History Online. https://sahistory.org.za/ref/E-0081616

South African History Online (2012) 'Dr Jonas Salk develops a vaccine against polio. With the help of this vaccine, polio was obliterated from SA.', South African History Online, 5 April. Available at: https://sahistory.org.za/ref/E-0081616 (Accessed: 10 August 2026).

South African History Online, Dr Jonas Salk develops a vaccine against polio. With the help of this vaccine, polio was obliterated from SA. [website], https://sahistory.org.za/ref/E-0081616, (accessed 10 August 2026).

"Dr Jonas Salk develops a vaccine against polio. With the help of this vaccine, polio was obliterated from SA.." South African History Online, 5 Apr. 2012, https://sahistory.org.za/ref/E-0081616. Accessed 10 Aug. 2026.

South African History Online. "Dr Jonas Salk develops a vaccine against polio. With the help of this vaccine, polio was obliterated from SA.." South African History Online. April 5, 2012. https://sahistory.org.za/ref/E-0081616.