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That the incidence of pellagra is not decreased by improved sanitation and general disease prevention methods, and that it is materially increased by business depression and increased prices of food, is the conclusion that must be drawn from the experience obtained in this city during the past five years.
The following tables show the improvement in health conditions which have been secured since 1911 through improved water supply, excreta disposal by means of sanitary sewers, the general sanitation of the city, incineration of all waste and refuse, strict laboratory control of milk and water supply and the infections that are subject to laboratory control, market and food inspection, improved drainage, medical school inspection, and the various other methods used for human conservation in modern public health work.
The percentages in Table 5 are computed to show the relation between the total number of deaths and the number of deaths from
NESBITT CT. SANITATION AND THE CONTROL OF PELLAGRA. JAMA. 1916;LXVI(9):647-648. doi:10.1001/jama.1916.02580350035014