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ANKYLOSTOMIASIS

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Originally appearing in Volume V02, Page 59 of the 1911 Encyclopedia Britannica.
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ANKYLOSTOMIASIS , or ANenYLosTOMIAS1s (also called helminthiasis, "miners' See also:

anaemia," and in See also:Germany Wurmkrank- heit), a disease to which in See also:recent years much See also:attention has been paid, from its prevalence in the See also:mining See also:industry in See also:England, See also:France, Germany, See also:Belgium, See also:North See also:Queensland and elsewhere. This disease (apparently known in See also:Egypt even in very See also:ancient times) caused a See also:great mortality among the negroes in the See also:West Indies towards the end of the 18th See also:century; and through descriptions sent from See also:Brazil and various other tropical and sub-tropical regions, it was subsequently identified, chiefly through the labours of Bilharz and Griesinger in Egypt (18J4), as being due to the presence in the See also:intestine of nematoid See also:worms (Ankylostoma duodenalis) from one-third to See also:half an See also:inch See also:long. The symptoms, as first observed among the negroes, were See also:pain in the See also:stomach, capricious appetite, See also:pica (or dirt-eating), obstinate See also:constipation followed by See also:diarrhoea, palpitations, small and unsteady See also:pulse, coldness of the skin, pallor of the skin and mucous membranes, diminution of the secretions, loss of strength and, in cases See also:running a fatal course, See also:dysentery, haemorrhages and dropsies. The parasites, which cling to the intestinal mucous membrane, draw their nourishment from the See also:blood-vessels of their See also:host, and as they are found in hundreds in the See also:body after See also:death, the disorders of digestion, the increasing anaemia and the consequent dropsies and other cachectic symptoms are easily explained. The disease was first known in See also:Europe among the See also:Italian workmen employed on the St Gotthard See also:tunnel. In 1896, though prev iously unreported in Germany, 107 cases were registered there, and the number See also:rose to 295 in 1900, and 1030 in 1901. In England an outbreak at the Dolcoath mine, See also:Cornwall, in 1902, led to an investigation for the See also:home See also:office by Dr See also:Haldane F.R.S. (see especially the See also:Parliamentary See also:Paper, numbered Cd. 1843), and since then discussions and inquiries have been frequent. A See also:committee of the See also:British Association in 1904 issued a valuable See also:report on the subject. After the See also:Spanish-See also:American See also:War American physicians had also given it their attention, with valuable results; see See also:Stiles (Hygienic Laboratory Bulletin, No. to, See also:Washington, 1903). The American See also:parasite described by Stiles, and called Uncinaria americana (whence the name Uncinariasis for this disease) differs slightly from the Ankylostoma.

The parasites thrive in an environment of dirt, and the See also:

main lines of precaution are those dictated by sanitary See also:science. Malefern, santonine, See also:thymol and other anthelmintic remedies are prescribed.

End of Article: ANKYLOSTOMIASIS

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