Medicine: Polio Pioneers

In the Wesley Chapel School, perched on a hill overlooking miles of slash pine east of Atlanta. Teacher Corinne Clark called the 47 moppets in second grade to order one morning last week. The stack of impressive-looking envelopes at her side, she explained, had been "sent out by the doctors to try to prevent you from having polio." She wanted the children to take the envelopes home to their parents and get their permission to be vaccinated. The youngsters took it all in quietly, asked not a single question.

Thus, routinely, news of the mass vaccination trials to prove the value of...

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