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Dr. Jonas Salk invented the vaccine against the polio. Before that the whole world was worried about the polio. Polio used to affect the most precious population, children! Two years before the invention of the polio vaccine, in US alone about 50,000 children got affected by polio. Dr. Jonas Salk did not get the patent for the vaccine, so that the vaccine became affordable for every body. Today is the 100th birth day of this hero. (28th October 2014.)

Jonas Salk invented polio vaccine. He did not patent the vaccine, so that it should be made affordable to every body.

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9y ago
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9y ago

Dr. Jonas Salk invented the vaccine against the polio. Before that the whole world was worried about the polio. Polio used to affect the most precious population, children! Two years before the invention of the polio vaccine, in US alone about 50,000 children got affected by polio. Dr. Jonas Salk did not get the patent for the vaccine, so that the vaccine became affordable for every body. Today is the 100th birth day of this hero. (28th October 2014.)

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10y ago

He invented one of the polio vaccines. A man named Sabin invented the other, also in the 1950's.

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9y ago

Jonas Salk invented polio vaccine. He did not patent the vaccine, so that it should be made affordable to every body.

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12y ago

i dont know you ancer it

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Q: What inventions did Jonas Salk invent?
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