If he's successful, his vaccine will work differently than Salk's. I'm off to interview him next. Yes, Mr. Klint, my vaccine is quite different from the Salk vaccine. You see, Salk's vaccine consists of dead polio viruses. Gosh, sir, I sure wouldn't like to have live polio viruses injected into my body.
Truth is, there's no conclusive proof that one is safer than the other.
The killed virus vaccine is injected into the bloodstream. You'll also need booster shots periodically. The virus ends up in the intestines, where it multiplies and enters the bloodstream. Your body then produces antibodies. There's no need for a booster.