The Journal of laboratory and clinical medicine . ion became ajij-jarent in diphtheria and scarletfever due to extensive preventive measures. The infant mortality rate was like-wise reduced from per 1,000 births in 1913 to in 1914 and in 1915. A sanitary survey of the city made in 1913 disclosed some six thousandprivy vaults witliin the city limits. The role that these insanitary fixtures arecapable of phning in the spread of typhoid fever is well known. This has been oiD Fever ScAREET Fever Diphtheria 63 20
The Journal of laboratory and clinical medicine . ion became ajij-jarent in diphtheria and scarletfever due to extensive preventive measures. The infant mortality rate was like-wise reduced from per 1,000 births in 1913 to in 1914 and in 1915. A sanitary survey of the city made in 1913 disclosed some six thousandprivy vaults witliin the city limits. The role that these insanitary fixtures arecapable of phning in the spread of typhoid fever is well known. This has been oiD Fever ScAREET Fever Diphtheria 63 2,7 2> 374 The Journal of Laboratory and Clinical Medicine amply demonstrated by the board of medical officers in 1898 and likewise by thereduction, from over 100 deaths per 100,000 in 1910 to less than 30 in 1912,from typhoid fever in Jacksonville, Florida, through the passage and enforce-. FIG. 2. ment of a sanitary privy law. In Detroit, privy vaults have been removed andsanitary toilets installed as follows: 1911—1912 492 1912—1913 1,839 1913—1914 1914—1915 1,340 Observations on Typhoid Fever in Detroit 375 There are now probably less than 2,000 remaining in the city and these arebeing replaced as rapidly as time will permit. During the past summer an extensive antifly campaign was maintained un-der the jurisdiction of the Board of Health in which some four thousand boysparticipated. The city w^as divided into six hundred small districts and eachboy was given a map of his district, literature and rules, and was made re-sponsible for his block or group of blocks. This campaign aimed rather at theprevention of flies by destroying the breeding places than at the exterminationof great numbers. Sources of Infection. In order to obtain uniform and complete data with regard to each case oftyphoid fever reported
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