¶ No sooner had the Salk polio vaccine received an apparently clean bill of health (TIME, Nov. 28) than the Massachusetts State Poliomyelitis Advisory Committee dissented.* State authorities, it ruled, are still not to use the vaccine until there is more convincing safety evidence. Last summer Massachusetts was stricken with the worst polio epidemic in its history (3,844 cases reported so far this year), and all-out advocates of the Salk vaccine have argued that many cases might have been prevented if the advisory committee had not blocked the injection program. But...
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