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JAMA. 1937;109(12):958-960. doi:10.1001/jama.1937.02780380042014.
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THE ZINC SULFATE SPRAY FOR THE PREVENTION OF POLIOMYELITIS  The successful use of a zinc sulfate spray in the prevention of experimental poliomyelitis in monkeys by Armstrong, Sabin, Schultz and their co-workers has stimulated much interest in its effectiveness as a preventive of the disease in human beings. Schultz demonstrated at Stanford University that in the experimental infection a solution containing 1 per cent of zinc sulfate, 1 per cent of pontocaine and 0.5 per cent of sodium chloride in distilled water is most effective in the monkey. The use of this technic in the human being has been too variable and uncontrolled to permit even an approximate estimate of its value. Dr. J. C. Geiger, the director of public health of San Francisco, and his distinguished committee have recommended that the use of this spray must be strictly limited until the proper technic has been worked out. There are

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