¶ In mass trials of polio vaccine, no fewer than 638,239 U.S. youngsters in the first three grades have received two inoculations (either of vaccine or a dummy substance). The third shot will be given a month after the second. Five (and possibly six) inoculated children have developed polio, but it seems certain that infection preceded injection. Mild reactions to the shots, such as a slight rash, nausea or a low fever, have been remarkably fewabout one in 2,000.
¶ With 7,276 new doctors licensed last year and only 3,855 deaths in the profession, the total number of U.S. physicians grew to...
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