Dr. Robison's article, published in this issue of The Journal, calls to mind the fact that there seems to be hardly any more fully accepted medical opinion than that of the direct reciprocal transmission of tuberculosis between man and cattle. And yet the direct evidence of the fact is, as Adami1 says, singularly weak. It ought not to be so as regards the communicability of human tuberculosis to cattle, as experimentation is altogether practicable, though as to the transmission of bovine tuberculosis to man it is out of the question. What we need is careful clinical studies, not generalizations from casual or imperfect observation, however probable they may appear. Such statements as the following, taken from a recent report: "There are practically no cases of healthy herds where attended by patients of sanitary institutions. If the inspector looks first at the people on the farm and finds one or
TRANSMISSION OF TUBERCULOSIS. JAMA. 1900;XXXIV(4):238. doi:10.1001/jama.1900.02460040048005
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