To do that with DNA, we need to tell the DNA what to replicate, and then give it the means to do so. We do this by using enzymes and primers. Primers are a subject for another time, but they are responsible for telling the polymerase where to do its work.
Polio was nearly eradicated when society decided to mass produce and use a vaccine created by Jonas Salk. Polio was a big issue but they managed to cure it with a vaccine. Comments.
When Did Jonas Salk Invent the Polio Vaccine. Although vaccines had been around for a number of years when Jonas Salk was doing his work, many of the diseases that we get vaccinations for today were considered untreatable at best and many of them were fatal. Amongst the worst diseases of the time was polio, which could cripple a child like nothing else ever could.