The 1952 polio epidemic killed 3,145 and paralysed 21,269 men, women and children in the US. Two years later, on 23 February 1954, Virologist Jonas Salk brought a glimmer...
The 1952 polio epidemic killed 3,145 and paralysed 21,269 men, women and children in the US. Two years later, on 23 February 1954, Virologist Jonas Salk brought a glimmer...