The first annual summary of diphtheria mortality in the cities of the United States with a population of more than 100,000 by the U. S. Census of 1920 appeared in The Journal last year.1 The second summary, for 1924, is presented here. Population estimates are the same as those used in the article on typhoid fever.2 The number of deaths from diphtheria used in calculating death rates has been sent us in each instance by the local health authorities, and we are under obligations for the generally prompt response to our request. Fort Worth, which was unable to furnish diphtheria data in 1923, sends figures for 1924 so that the total roll of sixty-nine cities is complete. The geographic divisions of the U. S. Census Bureau are used as in 1923.
As pointed out in the first summary, it should be kept in mind that diphtheria mortality occurs
DIPHTHERIA MORTALITY IN THE LARGE CITIES OF THE UNITED STATES IN 1924. JAMA. 1925;84(17):1269–1271. doi:10.1001/jama.1925.26620430002013
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