156 DISEASES DUE TO ANIMAL PARASITES 



Table XLVII. — Severe Cases of Sarcoptic Mange (Welch) 



HELMINTHIASIS 



A large number of observations are recorded showing the value 

 of blood examinations in cases of intestinal helminthiasis in man. 

 In certain helminthiases an anemia of a very severe type occurs, 

 notably with Bothriocephalus latus and Uncinaria duodenale, in 

 which the anemia may closely simulate that of cryptogenic per- 

 nicious anemia. Severe anemia is also sometimes produced by 

 other intestinal worms, as Trichocephalus dispar and Oxyuris 

 vermicularis. In many of the intestinal helminthiases a pro- 

 nounced eosinophilia is present. Brown reported an eosinophil ia 

 of 68.2% (11,070 per cmm.) with a leucocyte count of 17,700 per 

 cram, in a case of trichiniasis. Bucklers found as high as 9.8* , 

 eosins in a case of ascariasis, 8.2% with Taenia solium and 10' , 

 with Taenia saginata. 



There are many parasites that produce anemia in the domes- 

 ticated animals. The anemia is so marked in some of these that 

 it is known as "pernicious anemia," for example Uncinariasis in 

 dogs and in cats. Thiroux and Teppaz found a profound anemia 

 (1,750,000 red corpuscles per cmm.) present in dogs infested with 

 Uncinaria trigonocephala. Sheep and cattle also have a very 

 severe anemia due to different species of Uncinaria. Some of the 

 other worms producing serious anemia are: Distoma hepaticum, 

 Taenia fimbriate, Echinococcus, Sclerostomy, Oxyuris, Strongylus 



