Signs of the Times

[Rupert Blue, Surgeon-General United States Public Health Service, in a memorandum printed in the Congressional Record]

Although tuberculosis has long been the object of study and much knowledge has been acquired of the disease, that knowledge still has many gaps to be filled. For instance, we are still far from having complete information regarding such important points as the chief port of entry of the infection into the body, the conditions causing susceptibility, or relative immunity, the relative value of various preventive measures, the mechanism by which immunity to tuberculosis is created, and the arrest or cure of the disease effected. We are still without any specific treatment for tuberculosis and without any means of increasing individual resistance by the use of serums or vaccines.

[Waller Chinneck in Denver (Colo.) Post]

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August 30, 1919

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