The Polio Vaccine from John Salk re-emerges on the global level

April 14, 2015 1:24 AM

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John Salk created an injectable polio vaccine in 1955. It was widely used for combating the virus of polio. Exactly nearing its 60th birthday, the injection is rapidly replacing the oral polio vaccine that was said to be painless and more effective until much more recently.

Ever since the oral polio vaccine was introduced, most of the developed and developing countries switched over to it. Slowly the oral vaccine eclipsed the demand for the injectable polio vaccine so much, so that the health experts stopped using the injectable vaccine. However, the scenario is rapidl...

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