Battling Polio


The early 1900s witnessed feverish research toward creating a polio vaccine. Jonas Salk finally developed the first successful one, thanks in part to a team led by Raymond Parker. Parker was an internationally-recognized expert in tissue culture techniques at the University of Toronto. He supervised the creation of a new synthetic nutrient base known as “Medium 199.” This allowed the polio virus to be safely cultivated in large enough quantities for a vaccine trial.

“Medium 199” was part of the largest medical experiment ever undertaken at the time, culminating in the licensing of the Salk polio vaccine.

Connaught and the Canadian Polio Vaccine Story »