TRICHOCEPHALIASIS. 



(WITH A REPORT OF FOUR CASES, INCLUDING ONE FATAL, CASE.) 



By W. E. Musgrave and M. T. Clegg, with a 

 bibliography by Mary Polk. 



(From the Biological Laboratory and the Library, Bureau of Science.) 



Introduction. 

 Case Reports. 



Literature op the Disease, 

 trichocephaliasis. 

 Synonyms. 

 Definition. 

 Etiology. 



Contributing causes. 

 Trichocephalidse (by P. E. Garrison). 

 General discussion of tbe genus. 

 Trichuris trichiura. 

 Modes of transmission. 

 Direct. 

 Indirect. 

 Water. 

 Food. 



Insects (flies, etc.). 

 Soil. 



Dust, clothing. 

 Air. 

 Animals. 



Tf.ichocephaliasis — Continued. 

 Etiqlogy — Continued. 



Trichocephalidce — Continued. 

 Pathogenesis (parasitism). 

 General. 



Manner of infection. 

 Pathology of the disease. 

 Symptoms. 

 Incidence. 

 Clinical varieties. 

 Intestinal. 

 Appendicial. 

 Mild. 

 Severe. 

 Trichocephaliasis of animals. 

 Diagnosis. 

 Prognosis. 

 Prophylaxis. 

 Treatment. 

 Bibliography. 



INTRODUCTION". 



Our own experiences and a careful review of the literature of whip- 

 worm infections, convinced us that the subject has much more importance 

 . in human pathology than is generally assigned to it. 



For this reason we have decided to publish four of our cases in detail, 

 review the most important articles in the literature and then discuss the 

 question of trichocephaliasis in monographic form with special reference 

 to the disease-producing powers and clinical manifestations of infection 

 with these parasites. 



While it is true that the majority of investigators who have published the 

 results of original work have attributed pathogenic properties to these 

 parasites, and although these observations are supported by such author- 

 ities as Seifert, Stiles, Metchnikoff and others, to-day the majority of 

 text books on medicine barely mention these infections and in general 

 state that they are of little or no importance from a medical standpoint. 



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