OF THE ALOIENTARY TRACT 223 



coccicliosis in man, and the host is usually, appar- 

 ently, in good health. In the intestine of infected 

 animals there is little evidence of reaction to the 

 presence of the parasite. On the other hand severe 

 and fatal diarrhoea or dysentery sometimes occurs 

 in other animals. In the liver of the rabbit, which 

 is commonly infected by its own species, there occurs 

 a papuliferous bile duct lining proliferation, of tu- 

 mor-like proportions at times. Wenyon (1926) 

 notes a case, reported by Connal, who, having acci- 

 dentally swallowed oocysts of 7. belli, developed 

 diarrhoea and abdominal discomfort in six days. 

 This persisted for four weeks and oocysts appeared 

 in the stool three weeks after the onset of symptoms, 

 being present for twelve days. The stools became 

 normal and recovery was complete. 



In man intestinal coccidiosis is apparently a rare 

 and a self-limited infection. Most of the cases re- 

 ported have been in persons who had been in eastern 

 Mediterranean countries. However, Kofoid, Korn- 

 hauser and Plate (1919), and Kofoid and Swezy 



(1920) reported finding eleven cases of the infection 

 in United States troops, seven of whom had seen for- 

 eign service and four of whom had not. Haughwout 



(1921) reports a case from Manila which he thinks 

 originated in the United States. 



Other cases have been reported from West Africa, 

 Java, Portuguese East Africa, Durban, Malay, China, 

 Calcutta, Argentine, Brazil, and Saigon. 



Altogether there have been some one hundred and 



