What are Vaccines and How Helpful are they in Preventing Diseases?
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To understand much better let's start with the story of Polio. It is one of the deadly diseases humans have faced. This disease leaves the one affected, with lifelong physical disabilities. 40 years back there were more than 50 thousand cases of Polio worldwide and now in 2017, it was just 22. And the best thing is that except for 3 countries, all other countries including India are now Polio-Free countries. This massive win against Polio was just because of Polio vaccination that was given in a...
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