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On another page of this issue is given an abstract from the British Medical Journal of a paper by Sir H. R. Beevor that is suggestive and noteworthy. Assuming that the death-rate is the most reliable index of the incidence of phthisis, he takes the little rural districts as affording the most stable conditions of population and environment and shows a uniformity in the statistics of phthisis that seem to him the "most cogent evidence of the insignificance of case-to-case infection; the rates are far too regular for so variable a factor to be the determining factor." He quotes Andvord, who from a careful inquiry into the tuberculous deaths in five Swedish towns for sixteen years came to the same conclusion. It seems from the studies of both of these observers that other contributing causes, and more especially predispositions, are the ruling factors in the phthisis mortality. Contagion, of course,
THE INCIDENCE OF PHTHISIS. JAMA. 1900;XXXV(9):561–562. doi:https://doi.org/10.1001/jama.1900.02460350031008
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