Medicine: Pneumonia Vaccine

So shy that he seems secretive, Dr. Lloyd Derr Felton of Johns Hopkins went to Philadelphia last week where he cautiously urged doctors not to use a vaccine which he developed as a pneumonia preventive* (TIME, Sept. 13) until he has better proof of its efficacy.

Last week, however, the Army Medical School, whose technicians Dr. Felton helped to make the vaccine by the gallon, reported that not one of 15,000 CCC men vaccinated last summer with Felton vaccine has yet developed pneumonia. Of another 15,000 men in the same camps, who were not...

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