Dr. Jonas Salk

Who he is: 

Dr. Jonas Salk was the virologist who led the development of the polio vaccine. In 1955, trials demonstrated its safety and effectiveness, and approvals and licensing followed swiftly. He later founded the Salk Institute to advance basic science. His public communication made complex research understandable to families.

 

Why he matters: 

Salk demonstrated how rigorous testing and collaboration can change public health. His vaccine helped drive dramatic declines in polio cases and eased fear for millions of parents. He also modeled a service-first mindset about scientific credit and access. He illustrates how careful evidence can reshape everyday life.