Medicine: Polio Progress

When a legion of doctors gathered in Chicago last week to swelter through the annual convention of the American Medical Association, they had not long to wait for the news that interested them—and their patients—the most. How is the Salk polio vaccine working out?

In a jampacked session on Navy Pier, four experts led by Vaccinventor Jonas Salk pronounced a favorable verdict. One year and 40 million inoculations after the initial flurry of accidents, controversy and fumbling, the vaccine has been vindicated. Said Dr. Salk in an unwontedly cautious, indirect statement: "Inferences that the...

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