Neurologists David C. Poskanzer and Robert S. Schwab of Massachusetts General Hospital predicted in 1961 that Parkinson's disease would all but dis appear by 1980. Some medical authorities were skeptical, for they had seen no change in the number of Parkinson's cases over the years. Poskanzer and Schwab have now reiterated their earlier conclusion, and cite new evidence to support it.
Basis of the Poskanzer-Schwab prediction was an intensive study that convinced the two researchers that a majority of Parkinsonism victims developed the disease as a result of the worldwide epidemic of encephalitis lethargica that lasted from 1915 to 1926....
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