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Poliomyelitis is an infectious disease caused by polio virus. It can cause flu-like symptoms or paralysis.
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In 1908 the Polio virus was identified after its effects were discovered in 1905
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After Frank M. Burnet and Macnamara ran studies on monkeys, there research showed signs of other polio viruses.
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The disease grows more into the nervous system of the body.
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Bodian proves thew earlier theory that there are multiple polios. He finds three polio viruses.
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The disease starts spreading into the body's digestive system.
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After global eradication initiative in 1988, polio was declared eliminated from the Americas.