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December 15, 1956


JAMA. 1956;162(16):1491. doi:10.1001/jama.1956.02970330063021

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To the Editor:—  The Poliomyelitis Surveillance Unit of the Communicable Disease Center, U. S. Public Health Service, has, since its inauguration in May, 1955, systematically collected information from all states on all aspects of field experience with Salk vaccine. This information is compiled in a weekly or bimonthly mimeographed report that is distributed to health departments, epidemiologists, clinicians, laboratory workers, and others interested in this field.As one aspect of our national poliomyelitis surveillance program, we have collected data on a number of cases of neurological reactions following poliomyelitis vaccination. These were most recently summarized in our report no. 88. The neurological reactions following vaccination have been diverse in their manifestations. In the group included in report no. 88 there was only one case of myelitis. Since that report we have received several more reports of neurological illnesses in recently vaccinated individuals. Only one of these was a case of

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