. Transactions of the American Climatological and Clinical 1915 Bulletins, figures incomplete. Library and the Suffolk District Medical Society in April, 1912, it willbe very difficult to get rid of the last vestiges of the infection oftyphoid fever when the rate drops below 10 per 100,000. The workof the State Department of Health of Massachusetts in the matter oftyphoid fever at the present time is being conducted with a view ofovercoming the so-called endemic typhoid fever. To bring this aboutthere has been established a system of records which gives a sensitivecheck of all ca


. Transactions of the American Climatological and Clinical 1915 Bulletins, figures incomplete. Library and the Suffolk District Medical Society in April, 1912, it willbe very difficult to get rid of the last vestiges of the infection oftyphoid fever when the rate drops below 10 per 100,000. The workof the State Department of Health of Massachusetts in the matter oftyphoid fever at the present time is being conducted with a view ofovercoming the so-called endemic typhoid fever. To bring this aboutthere has been established a system of records which gives a sensitivecheck of all cases of typhoid fever in the Commonwealth. The StateDistrict Health Officers (now full-time health officials) personally 294 DISCUSSION investigate and follow up all cases of typhoid fever. The State watersupply in the cities and towns in Massachusetts is a particularly safeone. The outbreaks due to water-borne infection are few and farbetween. An intensive study of the milk supply, made by the specialMilk Board during the last year, has shown that the relative import-. ance of infected milk in the transmission of typhoid fever is ratherlow in Massachusetts. The question of typhoid fever carriers isbeing attacked vigorously by means of a careful epidemiological in-vestigation of cases with a thorough laboratory examination and carefulfollow-up work. For the prevention of typhoid fever the State of SOME FEATURES IN THE CONTROL OF TYPHOID FEVER 295 Massachusetts furnishes the typhoid vaccine free to every resident inthe State. Efforts are being made to induce everyone who has nothad typhoid fever to have this prophylactic administered. Dr. Rochester : I should like to ask Dr. Williams whether thesterilization of the water by chlorine has been studied ? I ask thisquestion because in Buffalo we have chlorinated the water was done by the Health Department. Whereas previously theCommissioner of Health had given out instructions that everybodyshould boil their water, he sta


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