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In the discussion of this subject, two questions enter into it, upon which the etiology of tuberculosis, and the degree of danger arising from the ingestion of tuberculous cow's milk, largely depend.
Is tuberculosis solely dependent on the tubercle bacillus for its development?
Is the tubercle bacillus found in the milk of all tuberculous cows?
As to the first question, I believe, at the present day, it should be generally admitted that we must look beyond the simple introduction of the so-called germ to the system for the production of this disease and recognize a condition that is not inherent in the healthy human organism upon which the development of tuberculosis depends.
The absence of this condition precludes the possibility of infection from the germ, because of the absence of a cultivation field.
The presence of this condition establishes a reason for great apprehension in regard to the
PARSONS FS. HAS TUBERCULOUS COW'S MILK CAUSATIVE INFLUENCE IN TUBERCULOSIS OF INFANCY? JAMA. 1895;XXV(15):617. doi:10.1001/jama.1895.02430410017001f
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