Just as the Public Health Service was using one hand last week to press the starter button and get the stalled polio vaccine program running again, one of its spokesmen disclosed how close the U.S. had been to unimaginable disaster. Dr. William H. Sebrell Jr., director of the PHS's National Institutes of Health, testifying before a House committee, in effect answered the question that for a month had haunted U.S. parents: was the Salk vaccine safe? Answer: no, not under testing procedures so far used. Sebrell admitted that the safety tests originally developed...
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