CHAPTER XI 



The Flagellates (Continued) 



Chilomastix mesnili. Prevalence. Morphology. Cul- 

 tivation. Transmission, Habitat and Effects. Treat- 

 ment. Giardia intestinalis. Examination for Giardia. 

 Morphology. Habitat and Effects. Treatment. Tri- 

 cercomonas intestinalis. Enteromonas hominis. Em- 

 b a do monas intestinalis . 



CHILOMASTIX MESNILI 



Chilomastix inesnili, although a uniformly common 

 intestinal flagellate of man, was long confused with 

 other organisms, particularly with Trichomonas hom- 

 inis, and w^as accurately described by Wenyon only 

 as recently as 1910. In the past few years it has 

 become more familiar to the medical profession. 



Reports from various regions give the incidence 

 of this parasite generally the greatest of all the in- 

 testinal flagellates. Hegner (1925) found it in 7.7% 

 in hospital patients in Central America, Hegner and 

 Payne (1921) give it an incidence of 4% in 20,000 

 reported cases, Boeck and Stiles (1923) found 3.2% 

 incidence in a survey of 8,029 persons. Jepps ( 1923) 



