Congressional Edition Volume 5952

Congressional Edition Volume 5952

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ...of them, so far as was ascertained, are on private property. Of the 103 cases investigated, 98, or about 95 per cent, gave a definite history of having used the unboiled Missouri River water supplied through the regular city system as the sole, principal or occasional source of water for drinking purposes during the thirty days prior to onset of illness. The following table gives the sources of water used for drinking during the thirty days prior to illness by the 103 persons affected and whose cases were investigated: Water: Raw tap--Number of cases. Solely 51 Principally 21 Occasionally 26 Occasionally(?) 3 Boiled tap--Solely 1 Principally 21 Occasionally 15 Private wells or springs in Omaha--Solely 1 Principally 7 Occasionally 5 Bottled and vended--Solely 0 Principally 1 Occasionally 0 Various sources out of Omaha--Solely 0 Principally 0 Occasionally 4 Of the 30 cases which gave a history of having used solely or principally for drinking the boiled tap, well or spring, or bottled waters, 9, or 30 per cent, were in persons who had been in the thirty days prior to illness in free association with previous cases in the febrile stage of the disease and were attributable to infection by personal contact. The relatively large percentage of contact histories in this group of cases is somewhat significant, in that it suggests that when the raw tap water as a possible factor in the distribution of the infection could be to some extent eliminated, other factors took a more prominent place. Of the cases listed as having used principally for drinking water other than the raw tap water, the vast majority were in persons who did use in considerable amount the unboiled tap water for drinking, many of them being school children and other persons who used for...
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Product details

  • Paperback | 154 pages
  • 189 x 246 x 8mm | 286g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236531205
  • 9781236531209