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November 19, 1927


JAMA. 1927;89(21):1774-1776. doi:10.1001/jama.1927.02690210040011

In a previous paper published in 1920 I1 reviewed 1,000 successive dispensary cases with reference to the incidence of tuberculosis in husband and wife. Since then I have reviewed 5,000 more cases, making a total of 6,000 examined to date.

In the previous paper I reviewed the literature up to that time. The most notable change in the literature since then on this subject has been the discussion as to whether tuberculosis, the disease, is endogenous or exogenous in origin. This will be discussed later; but I do feel now that with the addition of the further study of 5,000 cases we can take a more definite and conclusive stand with regard to adult infection.

This is a highly important question. It is one in which mankind the world over is interested and is entitled to know. I believe we now have sufficient data at hand to give the