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Beginning of Paper
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Poliomyelitis, infectious virus disease of the central nervous system, sometimes resulting in paralysis. The greatest incidence of the disease, also known as infantile paralysis, is in children between the ages of five and ten years. The disease was described in 1840 by the German orthopedist Jacob von Heine. In its clinical form it is more prevalent in temperate zones.
The virus usually ....
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Middle of Paper
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Disease Control
Three broad types of the virus have been identified: the Brunhilde (type 1), Lansing (type 2), and Leon (type 3) strains. Immunity to one strain does not furnish protection against the other two.
Poliomyelitis control was made possible when, in 1949, the American bacteriologist John Franklin Enders and his coworkers discovered a method of growing the viruses on tissue in the laboratory. Applying this technique, the American physician and epidemiol ....
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