The value of pure water / by George C. Whipple.

  • George C. Whipple
Date:
1907
Catalogue details

Licence: Public Domain Mark

Credit: The value of pure water / by George C. Whipple. Source: Wellcome Collection.

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    Table 2. EFFECT OF FILTRATION ON DEATH-RATES AT ALBANY, N. Y., AND A COMPARISON WITH TROY, N. Y., WHERE THE WATER WAS NOT FILTERED. Death-rates per 100,000. Per cent reduction of death- rates. 1894-98, before fil¬ tration at Albany. 1900-04, after fil¬ tration at Albany. Decrease. ALBANY Typhoid fever. 104 26 78 75 Diarrheal diseases. 125 53 72 57 Children under 5 years.. 606 309 297 49 Total deaths. 2,264 1,868 378 17 TROY Typhoid fever. 57 57 0 0 Diarrheal diseases. 116 102 14 12 Children under 5 years.. 531 435 96 18 Total deaths. 2,157 2,028 129 6 Remark.—Filtered water was introduced into Albany in 1899. The water-supply of Troy has remained practically unchanged. duced into Albany, N. Y., are compared, it will be seen that the reductions in deaths from general diarrheal dis¬ eases and the deaths of children under five years of age were much greater than in the case of typhoid fever. There was also a reduction in malaria, but this probably represents faulty diagnosis of typhoid-fever cases before
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