. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. 6 BULLETIN" 260, TJ. S. DEPAETMENT OF AGRICULTURE. hydatid disease, depending on the location of the parasite. The effects are very serious and the prognosis is always grave. A con- servative estimate gives a death rate of per cent of the persons infected (Vegas and CranvFell). The growth of the bladder gives rise to various troubles as a result of pressure, obstruction, perfora- tion of important organs, necrosis of tissue, liberation of poisonous products, secondary bacterial infections, rupture of
. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. 6 BULLETIN" 260, TJ. S. DEPAETMENT OF AGRICULTURE. hydatid disease, depending on the location of the parasite. The effects are very serious and the prognosis is always grave. A con- servative estimate gives a death rate of per cent of the persons infected (Vegas and CranvFell). The growth of the bladder gives rise to various troubles as a result of pressure, obstruction, perfora- tion of important organs, necrosis of tissue, liberation of poisonous products, secondary bacterial infections, rupture of the hydatid, and secondary hydatid infestation following rupture of the cyst. It is connnonly necessary to resort to surgical interference for the re- moval of the hydatid. Operation is often very difficult and may have to be repeated, owing to the presence of small external daughter bladders which are easily overlooked or incapable of detection. A. Fig. 2.—Portion of a hog's liver Infested with hydatid bladderworm (Eehinocoecus granulosus). Natural size (after Stiles). case has been recently recorded where the patient had to be operated on four times before the recurrence due to daughter bladders had ceased. In the lower animals hydatids are probably less often a cause of death, owing to the slow growth of the parasite and the fact that the affected animals are likely to be slaughtered before sufficient time has elapsed for the parasite to become a menace to the life of the animal. If brood capsules containing the tapeworm heads are eaten by dogs—a thing which is apt to occur on farms where the viscera of slaughtered animals, especially when they appear unwholesome, as they would in hydatid disease, are thrown out on the fields or fed to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hall, Maurice C.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashingtongovtprin
