Hookworm disease : etiology, pathology, diagnosis, prognosis, prophylaxis, and treatment / by George Dock and Charles C. Bass. Illustrated with forty-nine special engravings and colored plate.

  • Dock, George, 1860-1951.
Date:
1910
Catalogue details

Licence: Public Domain Mark

Credit: Hookworm disease : etiology, pathology, diagnosis, prognosis, prophylaxis, and treatment / by George Dock and Charles C. Bass. Illustrated with forty-nine special engravings and colored plate. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    The possibilities for harm of the disease, outside of the tropics, are well illustrated by the conditions in the West- phalian mines. Infection there was brought about by Ital- ian, Hungarian, and Polish miners, and was favored by certain factors. One was the rapid increase of the mining industry, which led to the importation of 20,000 new miners in a single year. (In the year 1902 there were 289 mines, with 256,000 miners.) But the most important cause was the introduction of spraying the mines with water for the purpose of preventing explosions of coal dust. On Feb- ruary 17, 1898, there was a tremendous explosion. On July 12, 1898, regulations for spraying were passed, and put into execution from July 1, 1899, to January 1, 1900. The effect of this can be seen in the following table after Oliver, a slight decline being followed by a notable increase: ,^ Number of Number Per infected mines, of cases. fO.OUO. 1896 15 107 6.4 1897 31 113 6.2 1898 23 99 4.9 1899 26 94 4.4 1900 40 275 11.7 1901 63 1,030 40.6 1902 66 1,355 52.9 In 1901, out of 63 infected mines, 57 of them were watered, and showed 1,021 cases. The other 6 infected mines were not watered, and gave only 9 cases. At one time in West- phalia there have been 25,000 cases of hookworm disease. In Africa, Egypt (90 percent in Cairo, 20—30 percent in other places), and the Mediterranean countries, the east and west coasts to the Cape, Uganda, Mombosa, Mozambique, Zanzibar, Madagascar, Mauritius, and the Comoro Islands are all infected, but, as Zinn and Jacoby first pointed out, the African negro races are not so likely to show severe symptoms as many other races. In Cameroon, Kiilz found