After the war, in 1947, Jonas Salk was offered his own laboratory at the University of Pittsburgh School of Medicine.
Early versions of a "Salk vaccine" were successful on a few patients, so more extensive tests were planned—a vast field trial that involved twenty thousand doctors, two hundred thousand volunteers, and almost two million school children.
When legendary journalist Edward R. Murrow interviewed Dr. Salk and asked him who owned the patent on the vaccine, Salk replied, Well, the people, I would say.
Second: When they successfully fought these diseases, Salk and Jenner didn't have anything like the technology and knowledge that are available today, even to an undergraduate.
If Jenner had had e-mail, Pasteur an electron microscope, Salk a genetic sequencer.