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Graph of family chronology illness moves back left. passes over Retention of Urine and Feverish and lethargy symptoms of mother and father. Pictures of family remain on left, labels appear on screen. Screen fades black. Words pop up of Polio clinical classification. Separates into non paralytic and paralytic. Arrow pops up to point to different groups as doctor comments on which group is larger. Screen fades to black. Fades back into bar graph of spinal segmental involvement. The Lumbar sacral is this highest. Arrow points to graph.