By next summer, or fall at the latest, Americans will be able to take their polio vaccination in three month-apart swallows of live-virus vaccine instead of being dependent on the hypodermic needle for injections of the Salk killed-virus vaccine. Last week Surgeon General Leroy E. Burney of the U.S. Public Health Service said he had been convinced that it is now possible to manufacture a live-virus vaccine "suitable for use in the U.S." Whether this unexpectedly abrupt decision was the result of mounting evidence of safety or of pressure on the Government by...
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